Newsweek told dermatologist Dr. Rayva Khanna about the Reddit post, which has garnered more than 7,000 upvotes.

Swelling may occur in the front, center, or back of the armpit, as well as along part of the upper arm near the armpit. In addition to being swollen, an affected lymph node may also be sore or ...

Twenty-one had no swelling of the upper arm, and 31 none in the forearms. An increase of 0.5 cm. in circumference was noted in 15 upper arms and 13 forearms.

DEAR MAYO CLINIC: I am trying to get into shape for summer, and one area that has always been challenging has been my upper arms. Recently, though, I began a workout routine, but a friend warned me… ...

A few people said they had their entire upper arm swollen, hot and red with large lymph nodes under their arm and some report that it took over 2 weeks for the arm swelling and rash to disappear.

If it swells up like crazy (my whole upper arm was swollen!) don’t wait to get treated thinking ‘It’s just a little bite. How bad can it get?’ Go to your dr or urgent care or the ER.

My wife's arm has been swollen since she had breast cancer more than 30 years ago, how can she stop the numbness? DR MARTIN SCURR. By DR MARTIN SCURR. Published: 05:10 EDT, 15 April 2025 | Updated ...