<s>[INST] I have a lump near my shin. It has been there 3 weeks. About a week into having the lump and bruise started to develop. Neither of them have gone away. I didn't hit my leg on anything. I went to the doctor and she wasn't helpful at all. Can you give me any ideas of what the lump and bruise may be from. [/INST] Hi.Thanks for your query and an elucidate history.The history is only for 3 weeks. IT is possible that you are having a ruptured vein or an insect bite or a boil.If there are no symptoms or redness, pain or local increase in temperature , wait and watch , ready to start treatment is symptoms develop. If resolves on its own , nothing to worry about. </s>