Hi, a month ago I had a small bump on my buttock cracks and I thought it was a mosquito bite. I went on a trip and it got better. Lately, I have been scratching my arms, legs, back and buttock cracks more! Currently, I have 3 bumps now. Also, I am 30, 115 lbs, 5 1 and I m an active person. Last night, I used hydrocortisone . Please help!