how to deal w paranoid friend

if someone you knew very well all of a sudden started acting paranoid what would you do?

as in: videotaping normal cops at a stop sign, ppl at starbucks just drinking their coffee, and writing down license plates becuz they believe they believe they were being followed.

and this person only told you. nobody else knows except you.

thank you rumi,

i feel so helpless. this person would never behave in this manner and i know something is up(drug wise).

he has never took drugs for depression. the last drug i saw him use was adderall and then i stopped talking to him for about 8 months from today.

he recently quit his job and moved back with his parents and got in a car crash.

no injuries. aderall is for ADHD people and its some typeof stimulant like meth but different?

i just want to see how everyone else would go about this...

ive asked him and hes said no drugs".

doubt it tho. there is no explanation for this.

Could be symptoms of PTSD, maybe consult your own physician or local GP and then go from there...?
You need expert advice, not DXP input.