What's the diagnosis? and please write down the appropriate treatment for this disease

Patient name:…

Age: 27 years.

Occupation : Student

All vital signs are normal. He is also physically healthy. Just he is affected in such type of skin disease that I have noticed in picture. He used Betson N cream for 2 weeks but when there is no improvement he use Econate plus cream for 2 weeks.This cream is not also responding…

He is suffering from this skin disease for 1.5 years…his affected area is very rough and always feels itching.

What’s the diagnosis? and please write down the appropriate treatment for this disease.

Plaque psoriasis :

Clobetasol diproionate onit +Salicylic acid 7٪ onit in one mix under occulsion twice daily for 5days & rest from ttt 2days, can be repeated for 3weeks,

Cetrizine tab once daily for itching for one week,

After end of this regimen, he must take Omega 3 cap for ever