I M Getting Itching During Night Time, I Consulted Couple

I m getting itching during night time, I consulted couple of dermatologist, they prescribed me Atarax and zyrtec, I took the medication for 15 days, even then, the itching didn't stopped, later I was prescribed Alaspa and still not got cured, so I am adviced for cleaning up my stomach to take ayurveda I went for 3 day course...no remedy to it...because of this I m losing my sleep in the night.

Please advise me, what to do now?

Riyaz Mohammed