What is this?

Hi all,

I would like a little assistant on discovering what it is (see picture). It appears randomly in areas like under arm, elbow, thigh and buttock. It usually start itching badly at night and if i scratch it grows bigger and it comes in bulk as shown in the picture but it'll disappear in the morning if i get to sleep after all the itching subside. Sometimes i think heat triggers it but sometimes it'll just start even i'm in a cold room.

Please help! Thank you very much.

[Paderla Anitha, DNB]

Hello and hope you are doing well.

The rash could be due to hives or other causes. The typical hives lesions are usually red raised areas with a pale center. They are intensely itchy and they come and go. So, the rash is not typical of hives, although it is itchy and shows variation in occurrence. Another possibility is an infection caused by a mite Sarcoptesscabiei, it burrows in the skin folds of hands and feet and causes intense itching mostly at night. This is also contagious. You may need to discuss this with your doctor who will examine you and may ask for blood tests and if needed may examine the scrapings from the skin to arrive at a diagnosis for appropriate therapy.

Hope this helped and do keep us posted.