Birthmark question..?

wow that actually sounds kinda gross if it grows gradually im not sure that its a birth mark, if its painful i wouldnt recommend going to the doctor, but if you have a big circular hairy patch on your leg then i would look into getting it removed especially if it grows, before you get in a serious relationship it could be kinda embaring. i have a wierd birth mark also but mines is kinda cool compared to yours i have a blue mole on my right shoulder. i have only seen two other people with blue moles in my life, its rare but cool compared to a big hairy growth lol good luck wth that