I have bad bruising under my armpit, down my arm, and around my wrist and hand. The bruise is turning yellow now, but very sore, ALL the way down the inside of my arm. There are three spots of bad red bruising near my elbow, which is now fading away. The doctors have no idea what this is, and I had a sonogram on my neck on Fri. to rule out a blood clot. ????? Thank you
Hi reading your description I am inclined to think it is Herpes Zoster (Shingles- a viral infection along a nerve). It has a natural course and it wanes off. In the meantime you can take gabapentin, painkillers and local application of Lotion calamine to sooth the area.