You know every single receptor binding site of every single psychiatric drug in your Psychopharmacology textbook, which you have read six times over, even though the textbook is over 1,000 pages long.
All you spend your benefits on besides food and bills is textbooks on pharmacology, medicine, surgery, and similar topics.
You don't see anything wrong with reading a textbook called "Trauma Injuries" with colour photographs and descriptions while eating your lunch at the canteen at university (although you do see it wrong to eat in the canteen when it's noisy).
You spend your free time learning train maps, anatomy structures, digits of pi, etc.
You take the British National Formulary book everywhere you go just in case you get bored and need some emergency entertainment reading material.
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I am a partially verbal classic autistic. I am a pharmacology student with full time support.