It could be a mild case of Jock Itch. Sometimes it's possible to get it from using a dirty towel to dry off; borrowing someone else's towel or T-shirt; using someone else's soap or shower sponge.
While this could be all it is, you may also be reacting to a new product you've recently purchased. Try using a soap or deoderant you're used to rather than your new one (if this is this case) and see what the effect is.
Otherwise, make an appointment with your doctor to see what is really going on.
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diagnosis, or treatment. Never delay or disregard seeking professional medical advice from your
physician or other qualified health provider because of something you have read on Wellsphere.
If you have a medical emergency, call your doctor or 911 immediately.