Scalp psoriasis. The course of action.

I have psoriasis for the past 10 years. For almost 6-7 years I have been using topisal % lotion for scalp psoriasis. After few years I prescribed to switch to ultitar cs lotion which I continued until now. Both the medications I have tried on and off. I never used them continuously or daily. But recently both of the lotions are not working for my scalp psoriasis and especially the ultitar cs lotion makes my head itch so bad that it's unbearable. I stopped using it and also there are red patches on my head , white scales are getting worse day by day. For the past six months I am also having acne problems, it keeps happening like every two days a new pimple pops up on my face and it's ruining my face. Please guide me about the course of action.