<s>[INST] A week and a day ago, I got pushed to the ground and received a humungous bump on the top-left side of my head. That night it swelled down a lot, but the next day I almost fainted for the first time in my life. Since that day, I still have a bump, I have a great lack of focus, and sometimes feel a mild pain or numb/cold feeling in the spot of the bump. Is this a serious head injury? [/INST] Hi, dairy have gone through your question. I can understand your concern.  You have history of head injury.  Your external bump is due to hematoma formation. Furthermore, you should take analgesic plus anti-inflammatory Chat Doctor.  Furthermore, you should also go for ct scan once to rule out internal head injury.  Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>