Skin tag is a benign condition and you do not have to worry about it. These tiny skin growths generally cause no symptoms unless they are repeatedly irritated. The commonest area where they occur are armpits, groins, enckfolds etc. Treatment options include removing with scissors, freezing (using liquid nitrogen), and burning (using medical electric cautery at the physician's office). You should consult a dermatologist to find out which treatment is the best one for you.
I hope it helps. Take care and God bless.
Thighs are often the first place to react to polyester in threads holding the seams of clothes together. Wear All cotton clothes. Loose fitting too. And see if this area gets better. It can't hurt!