OCD: Key Myths and Mistakes That Get in the Way of Understanding

Obsessive thoughts and ritual behaviours are surrounded by widespread misconceptions. The most common one: "OCD is one specific, self-contained illness." Dr. Saulitis argues for a fundamentally different view.

Myth 1: OCD is simply its own diagnosis

OCD symptomatology is a manifestation, not a standalone nosological entity. Obsessive thoughts and compulsive rituals can be part of very different disorders — depression, bipolar disorder, schizoaffective disorder, PTSD, substance dependence, or anxious personality disorder. Equating a symptom with a diagnosis is a critical error.

Myth 2: Obsessive symptoms always look the same

Obsessive manifestations differ significantly depending on the underlying disorder. In depression, they may take the form of thoughts about guilt and catastrophe, with the person getting stuck in mental rituals. In schizophrenia, obsessions combine with delusional ideas or hallucinations — here we are already dealing with psychotic symptoms. In bipolar disorder, the depressive phase may bring rituals, while the manic phase tends to produce disinhibited, impulsive behaviour instead. These are distinct clinical pictures that require distinct understanding.

Myth 3: Recognising the symptoms is enough to understand what's happening

This is where the main trap lies: the same symptoms appear across many different disorders. The key question is: what underlies the symptomatology? It is essential to determine whether obsessions rest on a psychotic foundation, affective fluctuations, or something else entirely. Without that distinction, any explanation remains incomplete.

What to keep in mind

OCD symptoms are a signal that must be considered within the full clinical picture. Symptoms alone are not enough — proper diagnosis requires a thorough history and attention to all co-occurring features.