Itching on legs, redness. Nowhere else.

I am having a lot of itching on my folds of thighs and calf and thighs and calfs as well on and off.Its not dryness because I apply a lot of moisturizer .Because of this itching small boils are erupting and it's becoming red on continuous scratching. I apply caladryl and then it reduces after a while.Not sure of its some allergy . I just started one a day gummies recently but I am not aware of any allergies I have.On the face of it I don't have any boils but once itching starts I scratch continuously and then some small boils erupt but once the itching stops after I apply some lacto calamine lotion they disappear .I get more itching on nights and some parts during the day.i am getting this itching only on my legs and fold of my legs and nowhere else.