Sweating can be stopped quickly with the use of SweatStop antiperspirants against excessive perspiration.
Hello!
The common causes of pain in scrotum are epidydomo orchitis, inguinal hernia; kidney stones etc.Serious causes of testicular pain are torsion which needs urgent medical attention. Excessive sweating can lead to irritation and yeast infections. For the irritation, a weak hydrocortisone may help (1% is over-the-counter.) and for the sweating, a powder like ZeaSorb may help. I suggest that you should take another visit to a dermatologist for consideration of these and other measures. I do hope it helps.
Take care and regards!