I have a large red bump and other smaller red bumps

I have a large red bump on my back, also smaller bumps near armpit and surrounding the nipple. They do not itch, rather they are tender to the touch, feels like bruising, but there is no blueish discolor.  

[Bhupinder Kaur, MD]

Hello,
From the symptoms these tender bumps sound like boils. The other possibilities are infected sebaceous cysts or swollen lymph nodes. Boil is usually due to plugged sweat glands that become infected or by an ingrown hair.

Apply warm compresses on the boil and keep the area clean and apply topical antibiotics like Mupirocin. Drainage of the boil is done only when it becomes soft and forms a head. Take some over the counter pain reliever and consult a doctor for examination and antibiotics prescription. If there are recurrent boils, then please get your blood sugar levels estimated.

I would suggest you to consult a dermatologist and get these possibilities evaluated. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.