Detailed information about psychotic episodes, hallucinations, delusions, and early intervention.
Anhedonia is more nuanced than 'losing the ability to feel good.' Recent research distinguishes between anticipating pleasure and experiencing it in the moment — and the distinction shapes treatment.
Thought disorderFormal thought disorder is a clinical term for changes in the structure of thought — how ideas connect — rather than their content. It is one of the core symptom domains in schizophrenia.
HallucinationsCommand voices instruct rather than narrate. They are often the most distressing kind to live with, but most people who hear them do not act on harmful commands.
Rare presentationsCatatonia is a treatable neuropsychiatric emergency marked by abnormal movement and behaviour. Recognised early, it often responds within hours to benzodiazepines or ECT.
SymptomsCognitive symptoms aren't dramatic, but they're often the strongest predictor of how someone with schizophrenia functions in daily life.
PsychosisMost people associate hallucinations with hearing voices, but they can affect any of the five senses. Each type carries different clinical meaning.
Thought disorderWord salad — clinically called schizophasia — is the most severe end of disorganised speech, where sentences become strings of unrelated words. Modern care has made it less common but no less important to understand.
Negative symptomsAvolition is the reduced ability to initiate and persist in goal-directed activity. It is one of the most misunderstood negative symptoms — and one of the most disabling.
PsychosisDelusions are not simply 'wrong beliefs.' They are organised, often elaborate experiences that follow recognisable patterns. Understanding those patterns is the first step to better care.
Rare presentationsParaphrenia is a historical name for late-life psychosis. The condition it describes — delusions emerging after age 60 with relatively preserved personality — is still very much real.
HallucinationsVoices that issue commands are among the most distressing hallucinations. Most go unobeyed, but understanding and coping with them is a core part of treatment.
SymptomsNegative symptoms — apathy, flat emotion, social withdrawal — drive much of the long-term disability in schizophrenia. They also respond poorly to most antipsychotics.
PsychosisA first episode of psychosis is one of the most consequential moments in mental health care. What happens in the first weeks shapes outcomes for years.
Thought disorderClang associations are sentences linked by rhyme, alliteration, or pun rather than meaning. They are most associated with mania but appear in schizophrenia too.
Negative symptomsAlogia is the clinical term for reduced quantity or content of speech in schizophrenia. It is often mistaken for shyness, depression, or rudeness — and it is none of these.
HallucinationsHearing music that isn't playing is a less common but well-described hallucination. It can occur in schizophrenia, in hearing loss, and in several neurological conditions.
Rare presentationsDelusional disorder is a distinct condition: persistent non-bizarre delusions in someone whose life otherwise looks remarkably ordinary. Here's how it differs from schizophrenia.
HallucinationsAround 70% of people with schizophrenia hear voices. Here's a clear, non-stigmatising guide to what auditory hallucinations are, why they happen, and how to cope.
DelusionsPersecutory delusions — the unshakeable sense of being watched, followed, or harmed — are the most common delusion in schizophrenia and often the most distressing.
SymptomsDisorganised thinking is the symptom that makes conversation hard to follow during a psychotic episode. It reflects a disruption in how thoughts are sequenced, not a loss of intelligence.
PsychosisLong before a first episode of psychosis, there is usually a quieter phase of subtle changes. Catching it can change the entire course of the illness.
Thought disorderTangentiality is when a question gets a related but off-target answer that never circles back. It is one of the more common and easily missed forms of thought disorder.
Negative symptomsAsociality is a reduction in the drive to seek social contact. It is not shyness, not anxiety, not preference for solitude — and the difference matters for treatment.
Rare presentationsFolie à deux describes the rare but real phenomenon of one person's delusion being adopted by someone they live closely with. Treatment usually involves separation and care for both.
HallucinationsVisual hallucinations occur in roughly a quarter of people with schizophrenia, but they are also a hallmark of several neurological conditions. The cause matters.
DelusionsGrandiose delusions can feel exhilarating from the inside and devastating in their consequences. Here's a careful look at why they form and what helps.
SymptomsCatatonia is an under-recognised but highly treatable syndrome that can appear in schizophrenia. Most cases respond rapidly to lorazepam.
PsychosisSubstances can trigger psychosis acutely, or in vulnerable people contribute to long-term psychotic disorders. The evidence varies considerably by drug class.
HallucinationsVisual hallucinations occur in roughly a quarter of people with schizophrenia. The texture of those experiences differs in subtle but useful ways from visual hallucinations of other causes.
Thought disorderCircumstantial speech eventually arrives at the point but only after a long, detail-heavy detour. It is the gentlest of the disorganised speech patterns and easily mistaken for ordinary verbosity.
HallucinationsTactile hallucinations are touch sensations with no external source — from feather-light brushes to the unforgettable sensation of insects crawling under the skin.
DelusionsReligious delusions sit on the most sensitive boundary in psychiatry — the line between sincere faith and a belief that has become symptomatic. Both deserve respect.
SymptomsAnhedonia in schizophrenia isn't quite the same as the anhedonia of depression. Recent research distinguishes the loss of anticipatory pleasure from the loss of in-the-moment pleasure.
PsychosisBrief psychotic disorder involves sudden psychotic symptoms that resolve within a month. Most people recover fully — but the episode still deserves serious attention.
DelusionsCapgras syndrome is the rare but striking belief that a loved one has been replaced by an identical-looking impostor. It bridges psychiatry and neurology and offers a fascinating window into how the brain constructs familiarity.
Negative symptomsFlat affect is the reduction in outward expression of emotion — facial expression, vocal tone, gesture. The inner emotional life often remains intact, which makes the symptom particularly easy to misread.
Rare presentationsCycloid psychosis describes brief, intense psychotic episodes that recover fully between attacks. The label is European and historical, but the clinical picture is recognisable worldwide.
Thought disorderDerailment, sometimes called loose associations, is when ideas slip off track within a single sentence — one of the core features of formal thought disorder.
DelusionsSomatic delusions centre on the body — its shape, its insides, or what is supposedly inhabiting it. They are often highly distressing and frequently misdiagnosed.
SymptomsAlogia is the negative symptom that quietly affects conversation — fewer words, less elaboration, longer pauses. It is rarely about not having anything to say.
HallucinationsOlfactory hallucinations — phantom smells with no source — are an uncommon but real symptom in schizophrenia, and they have a long differential diagnosis worth taking seriously.
HallucinationsSmelling something that nobody else can smell is unsettling. In most cases the cause is neurological or ENT-related, but olfactory hallucinations can also occur in schizophrenia.
PsychosisSchizoaffective disorder sits in the territory between schizophrenia and bipolar or depressive illness. The diagnosis is precise — and the treatment approach reflects both halves.
Rare presentationsKurt Schneider's first-rank symptoms once defined schizophrenia almost on their own. Modern diagnostic systems have stepped back from that idea — but the symptoms themselves still matter.
PsychosisA psychotic episode is a period when a person's brain produces experiences that aren't shared by the people around them. Understanding it from the inside changes how you respond.
DelusionsErotomanic delusions — the firm belief that another person, often someone unattainable, is secretly in love with you — are uncommon but cause real distress on both sides.
SymptomsAvolition is the absence of the internal push that normally gets people moving. It's a real neurological symptom, not a character flaw — and there are things that help.
Negative symptomsAttention deficits are one of the most common cognitive symptoms of schizophrenia — and one of the strongest predictors of how someone will function day to day.
HallucinationsTasting something that isn't there is the rarest type of hallucination. Causes range from epilepsy to medication side effects, with schizophrenia accounting for a small minority.
Thought disorderNeologisms are newly invented words or familiar words used in idiosyncratic ways. They are a less common but distinctive feature of formal thought disorder.
HallucinationsTouch hallucinations — feeling pressure, crawling, heat, or being touched without a real source — are uncommon but distressing, with several possible causes worth distinguishing.
DelusionsErotomania, also called de Clérambault syndrome, is a delusion that another person — frequently a stranger or public figure — is secretly in love with the patient. It is rare but can drive serious behaviour.
Rare presentationsSimple schizophrenia described slow, insidious negative symptoms without dramatic psychosis. DSM dropped it; ICD-10 kept it; ICD-11 has now retired it too. The clinical picture remains.
PsychosisSchizophreniform disorder is the diagnostic label for psychosis lasting one to six months. It often, but not always, becomes schizophrenia.
DelusionsDelusions of reference are the eerie experience of feeling that ordinary events — a song lyric, a stranger's glance — carry hidden personal meaning meant just for you.
SymptomsFlat affect is reduced outward expression of emotion — but research shows the inner emotional experience is often largely intact. The disconnect is in expression, not in feeling.
DifferentialThree psychotic diagnoses, three time frames. The DSM uses the duration of symptoms to distinguish them — and treatment changes as the diagnosis evolves.
Thought disorderThought blocking is the sudden, abrupt interruption of a train of thought. The speaker stops mid-sentence and often cannot pick the thread back up.
HallucinationsPhantom tastes — bitter, metallic, foul — are an uncommon but recognised hallucination in schizophrenia, often appearing alongside olfactory experiences and a long differential diagnosis.
HallucinationsHearing music that nobody else can hear is more common than people think — and far more often a sign of hearing loss than psychiatric illness.
DelusionsThought broadcasting, insertion, and withdrawal are among the most disorienting experiences in psychosis — the felt sense that the boundary of one's own mind has been breached.
SymptomsThe DSM-5 removed the paranoid subtype of schizophrenia in 2013. The clinical pattern it described still occurs in many people — and understanding it helps treatment.
PsychosisPostpartum psychosis is rare but severe — and unlike postpartum depression, it usually requires immediate hospitalisation. Early recognition saves lives.
Negative symptomsWorking memory — the ability to hold and manipulate information for a few seconds — is one of the most consistently affected cognitive functions in schizophrenia.
DelusionsThought withdrawal is one of the more disorienting experiences of psychosis — the felt sense that a thought is being pulled out of one's head, sometimes mid-sentence. It is a classic first-rank symptom.
HallucinationsHallucinations at the edge of sleep are common in healthy people and usually mean nothing. Knowing how they differ from the hallucinations of psychosis prevents a lot of unnecessary alarm.
Rare presentationsDissociation and psychosis can look like each other — voices, perceptual shifts, lost time. They are distinct conditions, but they overlap more often than older textbooks suggested.
SymptomsResidual schizophrenia is the phase between acute episodes when the loud symptoms have quieted but the quieter ones remain. It's where most of life with the illness happens.
HallucinationsBrief hallucinations at the edge of sleep are common in the general population. Knowing what they are — and aren't — can save a lot of unnecessary worry.
DelusionsCapgras delusion is the haunting conviction that a familiar person — often a spouse or parent — has been replaced by an identical impostor. Here's what we know.
PsychosisRecovery after a first episode of psychosis is more than the absence of symptoms. It is clinical, functional, and personal — and it unfolds over months and years.
DelusionsThought insertion is one of the strangest experiences in psychiatry — a thought arrives in the mind and is recognised as a thought, but is felt to belong to someone else. It is a hallmark first-rank symptom.
DifferentialDelirium is a medical emergency that can look like psychosis. Telling it apart from schizophrenia is one of the most consequential differential diagnoses in medicine.
HallucinationsSomatic hallucinations are perceived sensations from inside the body — organs moving, blood flowing in unusual ways, foreign objects within. They overlap with but differ from somatic delusions.
Negative symptomsExecutive function is the family of high-level cognitive processes that organise behaviour toward goals — planning, problem-solving, flexibility, inhibition. In schizophrenia, these are often substantially reduced.
DelusionsThought broadcasting is a particular kind of delusion in which thoughts feel as if they are leaving one's head and being heard by everyone in earshot. It is unusual, distressing, and treatable.
DifferentialPsychosis can occur as part of severe depression as well as in schizophrenia. The differences in mood, content, course, and treatment matter for getting better.
HallucinationsExtracampine hallucinations occur outside the normal sensory field — the sense that someone is behind you when you cannot see them. They are reported in psychosis and in several neurological conditions.
DelusionsWhen a person becomes convinced that the people around them can read their thoughts, every conversation becomes a kind of nakedness. Mind-reading delusions are a closely related cousin to thought broadcasting.
DifferentialParanoid personality disorder and paranoid schizophrenia share a word but not much else. One is a personality pattern; the other is a psychotic illness.
DelusionsWhen a person feels that their own arm is being moved by another agent, or that an emotion has been placed in them by an outside force, clinicians call it a delusion of control. It is one of the most distinctive experiences of psychosis.
HallucinationsPerceptual distortions alter how real things look, sound, or feel. They are not hallucinations, and the difference matters for diagnosis and treatment.
DelusionsReligious delusions occupy a difficult space — they often look like fervent faith from the outside and feel like revelation from the inside. The clinical task is to distinguish them from healthy spiritual life and treat them with care.