 [ Symptoms ] what is this small round solid slightly red bump between upper arm and breast that is not moveable  there is only 1 bump and i have had it for almost a month it is on the skin not underneath it i am a 24 year old female i have a dermatology appointment on the 21st but i am a bit anxious about it and wondered if there were ideas about it [ Disease ] in my opinion you should not think about surgery unless there is a symptomatic problem as this area is very sensitive and full of vital structures so i recommend strengthening your pectoralis group and deltoid muscle group