I have been getting what look like pimples all over my back, chest & shoulders but when I try to squeeze then because they look like they are infected, nothing at all ever comes out & so e if them become larger bumps under my skin, it seems like they ve started since I had problems last year that the dr couldn t figure out what was wrong. Didn t know if it could be related to last year, but since they couldn t come up with what was wrong, it s hard to figure out. All the dr was able to figure out last year was he told me I had a septic limb. I had a red patch on the inside of my elbow & a red line shit up to my underarm & a rope like shape protruded frominside my upper arm, from then my arm started swelling in different parts throughout the days even swelled down I to my hand. It felt as though I had a rubber band around my wrist, that was the sensation I had in that hand, & I still have that same sensation from time to time in that hand. They couldn t figure what was causing all these symptoms in my arm. They prescribed me steroids& antibiotics but still no answers. After the red line went away & swelling went down I still had what looked like a deep scar in my upper arm where the red line once was & since then I ve had these issues with what looks like acne in my upper back, shoulders & chest but like I said, they do not drain anything but some stay as lumps & are painful when touched