Top Definition
The type of syndrome you assign to somebody when they are obsessed with self-diagnosis and are very overractive.

Name is due to the character Reginald Barclay from Star Trek. Whom in one episode kept giving himself all sorts of self-diagnosis.

Also known as (more technically) hypercondriac
Person A: I've had the slight dizziness and clammy skin. I looked online and I think I have the swine flu.

Person B: No, you just have Barclay Syndrome.

Barclay: I think I have Terellian Death Syndrome!

Person B: No, you just have Barclay Syndrome
by seth³ August 01, 2009
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