Have a small hard bump on labia majora, it itches, it was like that for a while. Then a few days ago my labia lip swelled and it looked like pimples, i sat in tub to drain them, the next day the skin was dry, itchy and scaley. I used tea tree oil, i learned that could have worsened it, but what caused them to begin with. I am married, been monogamous for 14 years, no kids, 35 years old in excellent health. Any ideas?