<s>[INST] I got a swollen vein this past tuesday. I didnt go to the doctor I just put ice on it and thought the swelling would go down. Well it did but it made my arm worst then it was. I now have a huge dark bruise on my left arm. When I touch it I can feel a lump and it hurts. I want to know whay is causing this bruise to not go away... [/INST] I, Dear,Good Morning, and Thanks for your query to my virtual Clinic At Chat Doctor. I studied your query in depth and understood your concerns. Causes for the lumps in the arms are as follows-a-Mostly they are-Thrombophlebitis with bruise in left arm.Don't worry of them, as they could be relieved with proper treatment.-Treatment -a- Tab-NDAIDs/b-Hot fomentation, c-Rest and Elevation of left armc-Antibiotics if it does not respond in a day to earlier treatment. D-Surgeon consultation and needful further treatment with him is advisablee-To remove that lump-I would advise Germophobe point locally x 1 was time. Hope above reply would help you to relieve of the issue you have. Welcome for any further query to ME and Chat Doctor. Write Good review for the benefit of my new patients. Click thanks ASAP after this. Have A Good Day. With Regards Chat Doctor.  </s>