Explainer: Schizophrenia, Bipolar Disorder, OCD and Complex Trauma

Four diagnoses, four decades of cultural shorthand, and almost none of it accurate. Here's what each one actually is — stripped of the horror-film lighting and the throwaway jokes, and put back into plain, useful language.

Schizophrenia

Start with the correction that matters most: schizophrenia is not a split personality. That confusion has been dogging the diagnosis for a hundred years, borrowed from an entirely different condition, and it has done real damage to how the illness is understood. What schizophrenia actually involves is periods of psychosis — hallucinations or delusions — alongside changes in motivation, thinking, and social contact that, for most people living with it, shape daily life far more than the psychosis itself ever does.

It affects roughly one in a hundred people over a lifetime, which makes it considerably more common, and considerably less dramatic in practice, than its reputation suggests: the large majority of people with schizophrenia are never violent. Treatment combines antipsychotic medication with psychosocial support — often alongside early-intervention services designed to catch a first episode as early as possible, when outcomes tend to be best.

Bipolar disorder

Bipolar disorder involves episodes of depression alternating with mania or hypomania — stretches of elevated mood, reduced need for sleep, racing thoughts, and a pull toward risk that, from the inside, can feel less like illness and more like clarity. It's frequently mistaken for ordinary depression for years, largely because people tend to seek help during the low phase and rarely during the high one, when things can feel, briefly and convincingly, like they're finally working.

Mood stabilisers, structured sleep, and psychoeducation form the core of treatment, with the priority generally being long-term stability rather than managing one crisis at a time as it arrives.

OCD

OCD has had the rare misfortune of becoming a casual figure of speech — "I'm so OCD about my desk" — which has quietly stripped the term of what it actually describes. OCD is a loop: intrusive thoughts that provoke real, often frightening distress, followed by compulsions performed to bring that distress down, if only briefly. The thoughts themselves are frequently disturbing and deeply shameful to the person having them, which is exactly why the average person waits years before telling anyone at all.

The first-line treatment is cognitive behavioural therapy with exposure and response prevention, sometimes combined with medication — an approach that tends to work considerably faster than the years of silence beforehand would suggest is possible.

Complex trauma

Complex trauma follows prolonged or repeated trauma from which escape was genuinely difficult: childhood abuse, domestic violence, trafficking, war. Alongside the classic symptoms of PTSD, it typically involves difficulty regulating emotion, a persistently negative sense of self, and real trouble sustaining relationships, even ones a person actively wants.

It's a pattern that took mental health services a long time to formally name, which is part of why so many people carrying it spent years being treated for anxiety or depression alone, without anyone addressing what was actually underneath.

What connects all four

Each of these conditions is treatable. Each is routinely flattened or misdescribed in everyday conversation. And each carries a stigma that delays the point at which someone finally asks for help — often by years. That delay is the one part of this we can actually change.