Is there any possible way to get rid of psoriasis permanently, i have tried almost every steroids but i only disappear for few days and then reappear, ?

Not permanently: The newer biologics can have an amazing effect on improving psoriasis. Enbrel, Remicade (infliximab) and Humira can all be used to put the disease in remission. They are not cures and require ongoing use to prevent the disease from coming back.

Yes and no: There is no cure for psoriasis but the tnf agents aften provide dramatic benefit and sometime can remove all traces of psoriasis as long as you remove on it.