<s>[INST] Hi, my son is 4 and he hit his head at the back on Thursday, ever since then he had a really bad nose bleed on Thursday night in bed so was taken to a&e to be checked over, the said he seems fine, since then he keeps having bad nose bleeds should I be worried? [/INST] Hi,From history it seems that as A & E doctor examined him and found otherwise alright this bleeding from nose might be due to some minor injury in nasal cavity due to impact on nose following back of his head.Consult your doctor and get his nose examined from inside having some cut or soreness in nose.Ok and take care. </s>