Treatment for psoriasis. Cure from this?

Suffering from psoriasis (behind neck) from past 5 years although the size of the infection area was not bigger than the thumb tip. Earlier it was said as a sun burn but end of the last year I had consulted with a homeopathy doctor who said it's psoriasis and gone under the treatment of the same (Medicines taking: Soriafit oral drops and, cream, graphites by wheezal). As soon as I started taking homeopathy I could see aggravations on my neck and arms too. There's a ring worm too developing in the front side of the neck. Can see n feel rashes on other parts of the body too. It's been 3-4 months I'm taking homeopathy yet can't see any improvements besides the aggravations. Can any doctor help me out in this case? Which treatment is suggested to cure from this? It's been a headache since past few years. N.B: attaching few pictures as well for the reference