I just wanted to thank you for your reply and also to update you on my progress: The rash actually spread a lot further and I ended up going to see the dermatologist who diagnosed me with Lichen Planus. Ive just started the steroid course .. fingers crossed it clears!
Hello,
The commonest causes of vesicles in these areas would be atopic eczema followed by contact eczema. Other than that, it could be due to a viral infection. You need to get it examined from a dermatologist to confirm the diagnosis. Treatment is diagnosis specific.
You should also maintain hygiene and try to keep the area clean and dry, wear loose-fitting cotton clothing. Also use an antibacterial soap or mild soap like dove. Avoid deodorant / cosmetics. You can also use calamine lotion or cream with zinc oxide paste applied directly to wet skin after bathing.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.