Mental health glossary

Mental health terms, explained plainly

254 terms — diagnoses, therapy approaches, medications and the words that come up in a session, written without jargon. Look up anything you heard from a therapist, read on a prescription or saw in a report.

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AbreactionAbreaction is the release of strong emotion that comes when a memory you had pushed away, usually of something frightening or painful, is brought back and felt again.Acute Stress Disorder (ASD)Acute Stress Disorder is an anxiety condition that develops shortly after a traumatic event.AddictionAddiction is a chronic condition characterized by compulsive substance use or engagement in behaviors (e.g., gambling) despite harmful consequences.Adjustment DisorderAdjustment Disorder is a stress-related condition where emotional or behavioral symptoms arise in response to a significant life change or stressor (e.g., divorce, job loss).Adrenal Fatigue“Adrenal Fatigue” is an informal term suggesting that chronic stress leads to the overuse and eventual “burnout” of adrenal glands.AffirmationsAffirmations are short, positive statements you say or write to yourself, such as “I can handle this”, meant to steady you and push back against a harsh inner voice.AgoraphobiaAgoraphobia is an anxiety disorder involving intense fear and avoidance of situations or places where escape might be difficult, or help might not be available, should an anxiety attack occur.AlexithymiaAlexithymia means having trouble recognising your own feelings and putting them into words.AmbivalenceAmbivalence means having mixed or opposite feelings about the same person, choice or situation at once: loving and resenting a parent, or wanting a change and dreading it.Anger ManagementAnger Management comprises strategies and techniques designed to control the emotional and physiological responses to anger triggers.AnhedoniaAnhedonia means losing the ability to enjoy things you used to enjoy, or to look forward to them.Anorexia NervosaAnorexia Nervosa is an eating disorder marked by extremely restricted food intake, intense fear of weight gain, and a distorted body image.AntidepressantsAntidepressants are a broad class of medications used to treat depression, anxiety, and other mental health conditions.AntipsychoticsAntipsychotics are medications primarily prescribed to manage psychosis, including symptoms such as delusions and hallucinations.AnxietyAnxiety is a feeling of unease, worry or fear about something that might go wrong.Art TherapyArt Therapy is a form of psychotherapy that uses creative processes, such as painting, drawing, or sculpting, to help individuals express emotions, explore experiences, and develop self-awareness in…Asperger SyndromeAsperger Syndrome historically referred to a form of Autism Spectrum Disorder (ASD) characterized by difficulties with social interaction, restricted interests, and repetitive behaviors—often…Assertiveness TrainingAssertiveness Training is a therapeutic and personal development approach focusing on helping individuals communicate their feelings, needs, and rights openly and respectfully without resorting to…Attachment TheoryAttachment Theory examines how the bond (attachment) formed between an infant and a primary caregiver influences a person’s emotional development and relationships throughout life.Attention Deficit Hyperactivity Disorder (ADHD)ADHD is a neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity that interfere with functioning or development.Autism Spectrum Disorder (ASD)Autism spectrum disorder (ASD) is the medical name for autism: a lifelong difference in how the brain develops that shapes how a person communicates, relates to others, handles routine and change…Avoidant Personality DisorderAvoidant Personality Disorder is characterized by social inhibition, extreme sensitivity to negative evaluation, and a pervasive sense of inadequacy.

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Behavior TherapyBehavior Therapy is a broad term for types of therapeutic approaches that focus on modifying observable behaviors, rather than delving deeply into unconscious processes.BenzodiazepinesBenzodiazepines are a class of psychoactive drugs primarily used for their sedative, anxiolytic (anti-anxiety), anticonvulsant, and muscle-relaxant properties.BereavementBereavement is the period of sadness after someone close to you dies.Binge Eating Disorder (BED)Binge Eating Disorder involves recurrent episodes of consuming large quantities of food in a short period, accompanied by feelings of loss of control, shame, or guilt afterward.BiofeedbackBiofeedback is a technique in which individuals learn to influence physiological processes that are typically involuntary, such as heart rate, muscle tension, and skin temperature.Bipolar DisorderBipolar Disorder is a mood disorder characterized by manic (or hypomanic) episodes —periods of elevated mood, high energy, or irritability—and depressive episodes with low mood, fatigue, and…Black TaxBlack tax is the ongoing financial support that a working Nigerian gives to parents, siblings and wider family: school fees, rent, medical bills, ceremonies and emergencies.Body Dysmorphic Disorder (BDD)Body dysmorphic disorder (BDD) is a mental health condition in which a person spends hours a day preoccupied with a flaw in their appearance that other people can’t see or think is minor.Borderline Personality Disorder (BPD)Borderline personality disorder (BPD) is a mental health condition marked by intense, fast-changing emotions.Brief TherapyBrief Therapy refers to time-limited psychotherapy approaches designed to produce positive change in fewer sessions than traditional therapies.Bulimia NervosaBulimia Nervosa is an eating disorder characterized by recurring episodes of binge eating followed by compensatory behaviors such as self-induced vomiting, fasting, excessive exercise, or misuse of…BurnoutBurnout is exhaustion that comes from long-term stress at work that hasn’t been managed.

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Caffeine-Induced AnxietyCaffeine-Induced Anxiety refers to heightened nervousness, restlessness, or panic-like symptoms triggered by excessive caffeine intake.CatatoniaCatatonia is a psychomotor disturbance that can manifest as extreme motor immobility (e.g., stupor) or excessive motor activity that appears purposeless.Chronic StressChronic Stress is the prolonged and constant feeling of stress that can stem from ongoing pressures or hardships—such as challenging work conditions, financial strain, or persistent family conflict.Clinical PsychologyClinical Psychology is a branch of psychology focused on diagnosing and treating mental, emotional, and behavioral disorders.CodeineCodeine is an opioid found in some prescription cough syrups and painkillers.Cognitive Behavioral Therapy (CBT)Cognitive behavioural therapy (CBT) is a structured talking therapy that helps you change how you think and act.Compassion FatigueCompassion Fatigue, also known as Secondary Traumatic Stress, occurs when caregivers or professionals (e.g., therapists, nurses, social workers) become emotionally and physically exhausted due to…CompulsionA compulsion is a repeated action or mental act that a person feels driven to do, usually to ease anxiety.Conduct DisorderConduct Disorder is a persistent pattern of violating societal norms and the rights of others.CounselingCounselling is a professional relationship in which a trained counsellor helps you work through a personal problem, a decision or a change, in confidence.Crisis InterventionCrisis Intervention involves urgent, short-term psychological care aimed at stabilizing and supporting individuals in acute distress (e.g., suicidal ideation, severe panic attacks, or trauma).CyclothymiaCyclothymia (Cyclothymic Disorder) is a milder yet chronic mood disorder characterized by fluctuations between low-level depressive symptoms and hypomanic-like symptoms that don’t meet the full…

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DeliriumDelirium is a sudden change in how the brain is working that causes confusion and poor attention.DeliveranceDeliverance is a form of prayer in Pentecostal and charismatic churches, meant to free a person from spiritual affliction such as an evil spirit or a curse.Delusional DisorderDelusional Disorder is characterized by one or more persistent delusions (fixed false beliefs) lasting at least one month, without other significant psychotic symptoms commonly seen in schizophrenia…DementiaDementia is a group of symptoms caused by diseases that damage the brain, which steadily worsen memory, thinking, communication and the ability to manage daily life.Dependent Personality DisorderDependent Personality Disorder involves a pervasive psychological dependence on others.Depersonalization/DerealizationDepersonalization/Derealization involves persistent or recurrent feelings of detachment.DepressionDepression (Major Depressive Disorder) is a mood disorder characterized by persistent sadness, loss of interest (anhedonia), and a range of cognitive and physical symptoms.Dialectical Behavior TherapyDialectical Behavior Therapy is an evidence-based psychotherapy developed by Dr.DisassociationDissociation, often spelled disassociation, is a disconnection between your thoughts, feelings, memories, sense of self or surroundings.Dissociative Identity Disorder (DID)Dissociative identity disorder (DID) is a mental health condition in which a person’s sense of self is divided between two or more distinct identities, sometimes called alters, with gaps in memory…Drug AbuseDrug abuse is the use of a drug, legal or illegal, in a way that harms your health, your safety or your life: taking it without medical need, in larger amounts or more often than is safe, or despite…DysthymiaDysthymia—currently referred to in the DSM-5 as Persistent Depressive Disorder (PDD) —is a chronic form of depression characterized by a consistently low mood that lasts for at least two years in…

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Eating DisordersEating Disorders are serious conditions characterized by persistent disturbances in eating behavior, body image, and/or weight regulation.Electroconvulsive TherapyElectroconvulsive Therapy is a medical procedure used to treat severe psychiatric conditions—most commonly severe depression—by inducing controlled seizures via electric currents passed through the…Emotion-Focused Therapy (EFT)Emotion-Focused Therapy (EFT) is a talking therapy that treats your emotions as the main thing to work with, not something to get past.Emotional AbuseEmotional Abuse involves the systematic use of words and behaviors to manipulate, control, or belittle another person’s sense of self-worth or emotional well-being.Emotional ExhaustionEmotional Exhaustion is a state of feeling overwhelmed and drained by prolonged stress—often stemming from work (burnout), caregiving roles, or chronic interpersonal conflict.Emotional VentingEmotional venting means letting out strong feelings, such as anger, frustration or sadness, by talking, crying or writing, to relieve the pressure.EmpathyEmpathy is the ability to understand what another person is feeling and to share some of that feeling, while knowing it’s theirs and not yours.EncopresisEncopresis is a condition in which a child (generally older than 4) repeatedly defecates in inappropriate places (e.g., clothing, floor).EnuresisEnuresis refers to repeated involuntary or intentional urination in inappropriate places (e.g., clothing, bed) beyond the developmental age at which bladder control is expected (usually age 5 or 6…Exposure TherapyExposure Therapy is a form of behavioral therapy designed to help individuals face and overcome anxiety or fear by gradually exposing them to the feared object, situation, or memory in a safe and…Expressive Arts TherapyExpressive Arts Therapy uses creative modalities—such as art, music, dance/movement, drama, and writing—to facilitate emotional expression, self-discovery, and personal growth.Eye Movement Desensitization and Reprocessing (EMDR)EMDR is a psychotherapy approach developed by Francine Shapiro, primarily used to help individuals heal from traumatic experiences, PTSD, and other distressing life events.

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HallucinationsHallucinations are hearing, seeing, smelling, tasting or feeling things that seem real but aren’t there.HikikomoriHikikomori is a Japanese word for severe social withdrawal: staying at home, or in one room, for six months or more, avoiding school, work and nearly all contact beyond the family.Hoarding DisorderHoarding disorder is a mental health condition in which a person finds it very hard to part with possessions, whatever their value, because throwing them away causes real distress.Holistic TherapyHolistic Therapy (or Holistic Psychotherapy) takes a whole-person approach to treatment, integrating the mind, body, and spirit.HopeHope is the belief that your future can be better and that you can play a part in getting there.Hospice CareHospice Care provides comfort-focused support to individuals with terminal illnesses (and their families), typically when curative treatments are no longer pursued.Humanistic PsychologyHumanistic Psychology is an approach that focuses on individual potential, personal growth, and self-actualization.HypnotherapyHypnotherapy uses guided relaxation, intense concentration, and focused attention to achieve a heightened state of awareness (hypnosis).Hypochondriasis (Illness Anxiety Disorder)Hypochondriasis, now usually called illness anxiety disorder or health anxiety, is a condition in which a person worries intensely about having or developing a serious illness, keeps worrying after…HypomaniaHypomania is a milder form of mania characterized by elevated or irritable mood, increased energy, and heightened activity levels.

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Lability (Emotional Lability)Emotional lability means moods or emotional expression that change quickly, strongly and out of proportion to what set them off: tears, laughter or anger that arrive suddenly and are hard to control.Learned HelplessnessLearned Helplessness is a psychological state where an individual, after experiencing repeated adverse events perceived as uncontrollable, comes to believe they are powerless to change or improve…Light TherapyLight Therapy (or Phototherapy) involves exposure to artificial light—commonly a light box emitting bright, full-spectrum light—to regulate circadian rhythms and combat mood-related symptoms.LithiumLithium is a mood-stabilizing medication commonly used to treat bipolar disorder and, less frequently, certain forms of depression.LogotherapyLogotherapy, founded by Viktor E. Frankl, is an existential approach that posits a “will to meaning”—the drive to find purpose in life—as a primary motivational force.LonelinessLoneliness is the painful feeling that the connection you have with other people falls short of the connection you want.Low Self-EsteemLow self-esteem is a lasting, mostly negative opinion of yourself: a sense that you are not good enough, not likeable or less capable than other people.Lucid DreamingLucid dreaming is knowing that you’re dreaming while the dream is still going on.LumateperoneLumateperone (brand name Caplyta) is an atypical antipsychotic medication approved for the treatment of schizophrenia and bipolar depression.

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Major Depressive DisorderMajor Depressive Disorder (MDD) is a mood disorder marked by persistent feelings of sadness, loss of interest (anhedonia), and a range of cognitive and physical symptoms that impair daily functioning.Maladaptive BehaviorMaladaptive behaviour is any pattern of acting that may have started as a way to cope with stress or pain but now gets in the way of health, relationships or daily life.MalingeringMalingering means deliberately faking or exaggerating physical or psychological symptoms to get an outside reward, such as money, time off work or a lighter outcome in a court case.ManiaMania is a period of abnormally high or irritable mood with far more energy and activity than usual, lasting at least a week, or less if it ends in hospital.Medical PsychologyMedical psychology is the branch of psychology that works inside medical care: helping people cope with illness, pain, surgery and treatment, and helping doctors understand how behaviour and emotion…Mental Health StigmaMental Health Stigma is the negative attitude or discrimination toward individuals with mental health conditions.MindfulnessMindfulness is the practice of maintaining a nonjudgmental, moment-to-moment awareness of one’s thoughts, emotions, bodily sensations, and surrounding environment.Mkpuru MmiriMkpuru mmiri is the Igbo name, literally “seed of water”, for crystal methamphetamine, a powerful stimulant.Mood StabilizersMood Stabilizers are medications primarily used to treat mood fluctuations in Bipolar Disorder and sometimes in certain types of depression.Motivational InterviewingMotivational Interviewing (MI) is a client-centered counseling style that helps individuals explore and resolve ambivalence about behavioral changes (e.g., substance use, diet/exercise habits).Multifactorial ModelThe Multifactorial Model in mental health posits that psychological conditions and behaviors result from the interplay of multiple factors—biological (e.g., genetics, neurochemistry), psychological…Munchausen SyndromeMunchausen Syndrome (also known as Factitious Disorder Imposed on Self ) is a psychological condition in which an individual repeatedly acts as if they have a physical or mental illness by…Music TherapyMusic Therapy is a clinical and evidence-based use of music interventions to accomplish individualized goals within a therapeutic relationship.

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Narcissistic Personality Disorder (NPD)Narcissistic personality disorder (NPD) is a lasting pattern of grandiosity, need for admiration and low empathy.NarcolepsyNarcolepsy is a rare, long-term brain condition in which the brain can’t control sleeping and waking normally.NDLEANDLEA stands for the National Drug Law Enforcement Agency, Nigeria’s federal agency for drug control.Negative Automatic ThoughtsNegative Automatic Thoughts are the involuntary, reflexive beliefs and self-statements that occur in response to certain situations—often colored by cognitive distortions (e.g., “I’m a failure,”…NeurofeedbackNeurofeedback (also called EEG Biofeedback) is a therapeutic technique in which individuals learn to self-regulate their brain activity by receiving real-time feedback via electroencephalogram (EEG).NeuropsychologyNeuropsychology is the study of the relationship between brain function and behavior.NeuroticismNeuroticism is a personality trait: the tendency to feel negative emotions such as worry, fear, sadness, anger and guilt more easily, more often and more strongly than most people, especially under…Night TerrorNight Terrors (Sleep Terrors) are intense episodes of fear during sleep, often accompanied by screaming, sweating, and rapid heart rate.Nightmare DisorderNightmare disorder means frequent, frightening dreams that wake you and start to affect your sleep and your days.Nonverbal Learning Disorder (NVLD)Nonverbal Learning Disorder is a neurodevelopmental condition characterized by difficulties in spatial, visual-motor, and social skills.NorepinephrineNorepinephrine (noradrenaline) is both a hormone and a neurotransmitter involved in the body’s fight-or-flight response.NSSI (Non-Suicidal Self-Injury)Non-Suicidal Self-Injury refers to self-inflicted harm (e.g., cutting, burning) carried out without the intention to die.

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Panic AttackA panic attack is a sudden rush of intense fear that peaks within minutes.Panic DisorderPanic Disorder is characterized by recurrent, unexpected panic attacks and ongoing worry about having additional attacks or their implications (e.g., fear of losing control).ParanoiaParanoia is a strong sense, without good evidence, that others are trying to harm, cheat, watch or humiliate you.Pervasive Developmental Disorder (PDD)Pervasive developmental disorder (PDD) is an older umbrella term for conditions that affect social interaction, communication and behaviour from early childhood.PhobiaA phobia is an intense, lasting fear of a specific object, situation or activity, out of proportion to the real danger, that you avoid or endure with great distress.Play TherapyPlay Therapy is a form of psychotherapy primarily used with children.Post-Traumatic Stress Disorder (PTSD)PTSD is a trauma- and stressor-related disorder that can develop after experiencing or witnessing life-threatening events (e.g., combat, natural disaster, sexual assault).Postpartum DepressionPostpartum Depression is a severe form of clinical depression occurring in mothers (and sometimes fathers) following childbirth.PsychoanalysisPsychoanalysis, developed by Sigmund Freud, is a theoretical framework and therapeutic method aiming to uncover and resolve unconscious conflicts, desires, and defense mechanisms.PsychodramaPsychodrama is an experiential form of therapy where individuals enact real-life or imaginary scenarios in a group setting.PsychosisPsychosis is a condition where an individual loses touch with reality.Psychosomatic SymptomsPsychosomatic symptoms are real physical symptoms, such as headaches, chest tightness, stomach upset, pain or tiredness, that are caused or made worse by stress, anxiety, depression or trauma rather…PsychotherapyPsychotherapy (also called “talk therapy”) is a broad category of interventions where a trained mental health professional helps individuals understand their thoughts, feelings, behaviors, and…

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SapaSapa is Nigerian slang for being suddenly and severely broke.Schizoaffective DisorderSchizoaffective Disorder is a chronic mental health condition featuring symptoms of schizophrenia (hallucinations, delusions, disorganized thinking) alongside significant mood disorder symptoms…SchizophreniaSchizophrenia is a long-term mental health condition that causes psychosis: changes in how a person perceives reality, such as hearing voices others don’t hear or holding fixed beliefs that aren’t…Seasonal Affective Disorder (SAD)Seasonal Affective Disorder is a type of depression that follows a seasonal pattern, most commonly occurring in winter months when daylight is reduced.Self-CompassionSelf-compassion means treating yourself with the kindness you’d offer a good friend when you fail, make a mistake or are in pain, instead of attacking yourself.Self-EfficacySelf-efficacy is your belief that you can do what a particular task or situation needs: pass an exam, stop smoking, speak up in a meeting.Self-EsteemSelf-Esteem is an individual’s subjective evaluation of their own worth.Self-HarmSelf-Harm (also called Non-Suicidal Self-Injury, or NSSI) involves intentionally injuring one’s own body without the intent to end one’s life.Self-MedicationSelf-Medication refers to the use of substances (alcohol, drugs) or behaviors (e.g., overeating, excessive gaming) to relieve mental health symptoms such as anxiety, depression, or stress.Self-TalkSelf-talk is the running conversation you have with yourself: the thoughts you direct at yourself about what’s happening and how you’re doing.Separation Anxiety DisorderSeparation Anxiety Disorder involves excessive fear or anxiety about being away from home or attachment figures (e.g., parents).SerotoninSerotonin is a neurotransmitter that helps regulate mood, appetite, sleep, and various other functions.Service Dogs for Mental HealthService Dogs for Mental Health are specially trained canines that assist individuals with psychiatric disabilities (e.g., PTSD, severe anxiety, panic disorder).Sleep DisordersSleep Disorders encompass a variety of conditions that affect sleep quality, timing, or duration.Social Anxiety DisorderSocial Anxiety Disorder is marked by intense fear or anxiety about social or performance situations where one might be scrutinized, judged, or embarrassed.Solution-Focused Therapy (SFT)Solution-focused therapy (SFT) is a short-term talking therapy that spends less time on what’s wrong and more on what you want instead.Somatic ExperiencingSomatic Experiencing is a body-oriented therapeutic approach to healing trauma and stress disorders, developed by Dr.Somatic Symptom DisorderSomatic Symptom Disorder involves one or more chronic physical symptoms (e.g., pain, fatigue) that cause excessive thoughts, feelings, or behaviors related to the symptoms.Spiritual AttackSpiritual attack is a widely used explanation in Nigeria for sudden misfortune, illness or distress — the understanding that it has been caused deliberately by malicious spiritual forces rather than…SSRI (Selective Serotonin Reuptake Inhibitor)SSRIs are a class of antidepressants that block the reabsorption (reuptake) of serotonin in the brain, increasing its availability in the synaptic cleft.StigmaStigma in mental health refers to negative attitudes, beliefs, and discrimination directed toward individuals with mental health conditions.Stress ManagementStress Management encompasses a variety of techniques and lifestyle changes aimed at reducing chronic stress and its negative impact on mental/physical health.StressorA stressor is anything that causes stress: an event, situation or demand, inside or outside you, that calls on you to adjust or cope.Substance Use DisordersSubstance Use Disorders involve the recurrent use of alcohol or drugs leading to clinically significant impairment, health problems, or distress.

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Talk TherapyA general term for psychotherapy in which a person discusses concerns and emotional issues with a mental health professional.TeletherapyTeletherapy is the provision of mental health services via remote technology—like video calls, phone calls, or chat platforms—rather than in-person sessions.TemperamentTemperament is the largely inborn side of personality: how strongly you react to things and how easily you settle and control yourself.Therapeutic AllianceThe Therapeutic Alliance (or Working Alliance) is the collaborative bond between client and therapist, encompassing mutual trust, agreement on therapy goals, and commitment to therapeutic tasks.TherapyTherapy, in mental health, usually means psychotherapy: regular conversations with a trained professional that help you understand and change troubling feelings, thoughts and behaviour.Tic DisordersTic disorders are conditions in which a person makes sudden, quick, repeated movements or sounds, called tics, that they don’t choose and find hard to control.TMS (Transcranial Magnetic Stimulation)TMS, transcranial magnetic stimulation, is a treatment for depression that uses a magnetic coil held against the scalp to stimulate nerve cells in part of the brain.Toxic StressToxic Stress is an intense and prolonged stress response without adequate support or resources, often resulting from persistent adversity (e.g., abuse, neglect, extreme poverty).Traditional HealerA traditional healer is a practitioner of indigenous healing, such as a herbalist, dibia, babalawo or boka, consulted for physical and mental complaints.TramadolTramadol is a prescription opioid painkiller.Trauma-Focused CBTTrauma-Focused Cognitive Behavioral Therapy (TF-CBT) is a specialized therapy model designed to help children, adolescents, and their caregivers process and cope with the aftermath of traumatic…Trauma-Informed CareTrauma-Informed Care is an approach where service providers acknowledge the widespread impact of trauma, recognize its signs and symptoms, and integrate this understanding into policies and practices…TrichotillomaniaTrichotillomania (Hair-Pulling Disorder) involves a recurrent, irresistible urge to pull out one’s hair, resulting in hair loss.

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