I have had slight nipple soreness in my left nipple only for around 5 days. It is only sore to the touch and I have never had pain in this area of my body. I am a healthy 44 year man old who works out 3-4 times per week. It does not feel like a muscular injury. Should I be concerned?
As of now, you can use OTC topical emollients or OTC Hydrocortisone cream. If not better please consult a dermatologist. Please do remember that skin conditions are best diagnosed and treated after seeing them directly and hence I recommend posting an image here and getting back, please.
Hope I have answered your query. Let me know if I can assist you further.