What Is The Treatment For Psoriasis?

hi, my mother is suffering skin problem from last 3-4 yr. nd her age is 47.

nd it's psoriasis.she has the red,itchy nd dry patches on whole body. she had taken the treatment of this from one of the best Skin specialist nd these red patches had been removed bt from last one month she is facing the same problem nd feeling very embarrassment...

So pls suggest some gud Skin specialist in Delhi/ncr.