I've a hard lump under my skin on right upper arm?

Skin Bumps. There are a number skin conditions that cause lumps and bumps to appear on the surface or just below the skin. The most common ones are lister below: skin cysts, cherry angioma, dermatofibromas, epidermoid cysts, folliculitis, keratoacanthoma, keratosis pilaris, lipomas, neurofibromas.

Related Questions

I have small nickle size lumps, sphere shaped under the skin going inward ubder right arm pit, they do come to a head 4-10 days what are they caused from.? A doctor one time gave me mincycline that gave me hives badly. They have also come under left arm p

I . I can't diagnose your condition. It sounds somewhat like hydraandenitis suprativa. You can ask your dermatologist to examine your lesions to get the right diagnosis. That in turn can lead to appropriate treatment recommendations. Read more...
Hard . Hard to tell without a clinical examination so i would see a dermatologist. Perhaps you have hidradenitis suppurativa. See a picture and read about treatment options at the link below. I hope that helps! Read more...