Hello.
Yes.
If you are going to follow do & don't with ayurveda medicine, too patients are being cured with pure ayurveda.
Psoriasis is mentioned under title kustha in ayurveda
main treatment is pnachkarma therapy.
It's detoxification process by cleaning body.
Mainly include vamana: medicated emesis
virechan: medicated purgation
rakta mokshana: blood letting
after doing pnachkarma, internal medicine should start & remain continue. I need detail history of yours to decide root causes. 1 st treatment is too stop causative factors
like
sour salty spicy food
virudhdh ahar
milk too much
eat hot & cold things simultaneously
use ac too much
go in sun light too much
excessive heat
food without oil or ghee
stress etc are causative factors.