I'm sorry to hear you're experiencing daily headaches, especially pain at the back of your head. This type of headache can have several possible causes, including tension-type headaches, cervicogenic headaches (originating from the neck), or sometimes migraine variants.

• Since you mentioned eating meals properly, low blood sugar is less likely, but other triggers like stress, poor posture, or muscle strain in the neck could contribute.
• If you are taking any medications like Xenadom 500 (which contains naproxen and domperidone for migraine and pain relief), note that headaches can sometimes persist or even worsen if the underlying cause isn't addressed.
• Persistent daily headaches warrant evaluation by a neurologist or headache specialist to identify the exact cause and tailor treatment.

Please consult a neurologist to get a thorough assessment and appropriate management for your headaches. If you experience sudden severe headache, vision changes, weakness, or confusion, seek emergency care immediately.To narrow down potential causes, we will need some more information.Please tell me your age and gender.