In the differential diagnosis, conversion disorder may coexist with which of the following conditions?

• A. Neurological disease
• B. Cardiovascular disease
• C. Endocrine disease
• D. Infectious disease

Answer: (A)

The important idea is that conversion disorder can occur alongside a real neurological illness. Even when someone has a genuine neurological disease, they can also develop functional neurological symptoms that resemble conversion symptoms. This means that, in evaluating the presentation, you should be open to the possibility that both a neurological disorder and a conversion disorder may be present.

That’s why neurological disease is the best answer: the coexistence of a true neurological condition with conversion symptoms is a recognized clinical possibility and is central to how clinicians approach the differential diagnosis. Cardiovascular, endocrine, and infectious diseases can cause a variety of symptoms, but the specific and most relevant coexistence in this context is with another neurological condition.