Skin Itchines Joint pain. And joints?

I have skin itchiness for about 1.8 years or more. Whatever the medications I take the itchiness will not come, if I stop taking medicines automatically itchiness will start their routine in all of my body parts. I have tried normal medicines, then with a dermatologist from jayanagar, later took Ayurvedic treatment, then UNANI treatment and currently taking Sidha medicines from last 8 months and almost completed, again my skin started to itch like anything. Also recently I getting pain in finger joints as well as swelling on palms of my hand. Feeling burn in the itchiness area with red color patches. Due to all these my hair also started to fall. What is it called and is homeopathy will help me in these conditions of my skin and joints?