What you have is probably intertrigo which is an inflammation (rash
) appearing in the body folds like groin
, back of knee, neck, axilla/armpit etc. It can be red and raw-looking, and may itch, ooze, and be sore. It can be a bacterial, viral or fungal infection. Please keep the area clean, dry and apply some topical antiseptics. OTC anti allergics will help. You can apply topical creams with zinc oxide and mild steroids and see if it helps.