Welcome to healthcare magic
I am Dr Fahim and I will help you with problem
I have gone through your question and under stood your concerns. Mostly likely it is inflammation of the skin called
contact dermatitis. Its only skin condition and nothing is wrong with your testis, which lying inside the
scrotum. You need not to worry, it simple and treatable condition. All you need to do is to keep the area dry and clean, apply
betnovate ointment (Local steroid ointment) twice or thrice daily, take
paracetamol 500mg thrice daily for pain relief. He will be better in matter of days. If the rash persist beyond three days of starting this treatment, then you may need to see a
dermatologist, who after clinical examination with make a diagnosis and guide you about treatment options.
I hope my answer will help you. Do rate it, if you like it.
Regards