Hi there,
Your symptoms sound like they way be related to some form of nipple eczema or dermatitis. Especially since the symptoms worsen with sweating and is associated with intense itch.
What you should do is to see a doctor for a consultation as only when a doctor examines the area of concern can we form a better clinical diagnosis and help you treat your condition better.
Hope this helps.
Regards,
Dr Michelle Chia
