<s>[INST] Hi the back of my head and mainly neck hurts when I sit up or stand its not a headackes as such more like a dull ack I haven't been in any accident I was told it could be a tention headackes but I'm not stressed out I'm a 31 year old male from the uk please help me  YYYY@YYYY [/INST] I read your question carefully and understand your concern. A headache which occurs with standing up is suggestive of a spinal fluid leak. This usually closes by itself within a few days, but it is advised to see a doctor to get an MRI scan to rule out other causes of headache. Take Tylenol (max 3g a day) and caffeine (200mg 1-1-0) for pain relief. Hope you will find this answer helpful!Kind regards,Dr. Wu </s>