What causes a painful lump below the clavicle?
Patient: Hi, Someone was on top of me and had all their body weight from their palm on my chest right below my left clavicle and now there is a golf ball size lump. I have super sharp pain in my back and it hurts to breathe deep and coughing is almost unbearable. It's been about a week and a half and I need to see if this is dangerous to not see a doctor. It feels like a muscle strain in my back though. even though it was caused in the front from being pressed on way to hard. Any advice? Doctor: Respected user , hiThanks for using Healthcaremagic.comI have evaluated your query thoroughly .* Seems hematoma formation most likely with referred neuritic pain over    back  side .* Should immediately seek medical attention without delay as the    symptoms  severity is much more according to the narration ,   take tab.tylenol (500)mg  stat dose for instant relief .Hope this clears your query .Welcome for further assistance .Regards .