This is my specialist subject... I have spent hours/days researching naturopathic/conventional solutions to body hair.
I suspect that idiopathic hirsutism is a sub type of PCOS, but because I've always had regular normal periods, I've never been taken seriously by doctors, even when undergoing fertility investigations... they never looked into the PCOS side. First time I went to the doctor at 16 ish, she even reassured me I wasn't turning into a man
It's the psychological shame... it's really contributed to my life long low self esteem. I'd be happy to be hippyish and laissez faire with the razor... if I had a low-normal amount of female body hair... I don't wish to be "patriarchy-compliant" totally smooth either.
I probably score about 12 - 15 on the F-G chart. Many times I've cried in pain while epilating, not the physical pain, but the emotional pain of being so hairy and knowing I'll have the feeling of a cactus growing under my skin again in half a week 
I have had a lot of relief drinking spearmint tea (small scale scientific studies back this up - it contains an inhibitor that prevents the conversion of standard testosterone into its turbo version - which promotes hair growth). Also eating a low carb/GI diet as insulin shares much of the metabolic pathway that converts to testosterone.