Is it PCOD aur some other disease?

Since last 9 yrs i have hair fall nd its for 12 months no seasonal changes on daily basis 50-70 hair s but for 2,3 months i face severe hair fall like m going to go bald within days ...and since then i hav skin problems also acne,pigmentation even i have taken treatment ..i have been taking treatment for acne since 7 yrs and for hairs since 5 years though not continuous treatment ...even i have irregular menstruation ...but Usg reports were normal but i gain weight easily ...even thyroid,FSH,LH all reports were normal ...and i sweat alot even in winters from axillary area ...thyroid test m doing every year but normal ...plzz tell me which all test i should do and when ..i have shown to dermatologist ,gyanaecologist but every time normal reports so only symtomatic treatment