<s>[INST] Hi, I had a fall on my bike nearly 3weeks ago, and and landed full force on the cross bar. I m female, it came up like an egg straight away but still after nearly 3 weeks it s still tender and I still have a hard lump the size of a conker. Is there anything I can do? [/INST] U have a tender lump after trauma...Tht can be either due to inflammation or may be due to collection Of pus inside it...However if u dont have fever nd local reddning of skin it may be less likely In this conditions simple analgesic with anti inflammatory drugs along with cold compression will be very helpful </s>