Internal hair psoriasis from 7-8 years.

I'm having hair psoriasis from last 7-8 years. Consulted dermatologist, homeopathic and ayurvedic doctors, no one was able to recognize the problem except dermatologist doctor,he said that im suffering from psoriasis which is 'Internal'(bcoz the white flakes/dandruff is not visible from outside scalp). After taking alopathy medicines(4months) I found horrible side effects on my body so I stopped. But yes the results was on my favour. I could not find any results after taking Ayurvedic and homeopathic medicines. I'm having itchiness, oily, hard dandruff from outside and hairloss is horrible. My scalp is clearly visible now For Doctor's: I know what is psoriasis and the basic stuff so pls request u to not give me the overview on it. And we don't have psoriasis heridity in my family. Could somebody please suggest/guide me the best thing that I can do to resolve my problem. ?? Appreciate your time . Thanks