<human>: Hi,About a month ago I slipped and bumped my head - the lump was about 1/2 the size of a cricket ball - I could only just cup my hand over it.  There is still a lump there and its still tender and numb - i live in a remote commnunity and its not easy to get to a doctor - I would have to fly to the nearest city which is about 500km away.
<bot>: HiT hanks for your query and an elucidated history about the cause and size of the bump and your inability to get an attendance by a medic at your place. The lump which you have is called a hematoma, that is collection of the blood under the skin of head called a scalp. The treatment is simple:Aspiration of the hematoma may solve your problem, and you just need a wide bore sterile needle and a large syringe and the nurse or any para-medic can do this for you. Please remember to apply a very tight Chat Doctor. Take care.