Autoimmune disorder/ arthritis/Alopecia.

Hi, I had rheumatic arthritis ( nor sure, maybe chickenpox) where my all joints pains so much. That situation last 1 week approx. But after that, still there's little effect on my body. It's been 6 months but still feeling that pain in my most body joints such as hand, Ankel, wrist, elbow etc. If I sit for 10 minutes, I have to spread legs and wait to get rid of that ankle pain. It's been 6 months. Another incident, I'm having alopecia in my beard, a small bald patch sudden appears since 20 days. So, I've searched for both of that health issue and I saw that is is related to autoimmune disorder where antibody attacks our healthy cell. Also the same antibody attacks hair follicle and result in small bald patch in beard. So can you please explain how can it be treated ? Is there any medicine?