For a 38-year-old male, a new-onset severe one-sided headache lasting 10–15 minutes, especially if it occurs during sleep or wakes you from sleep, requires prompt medical evaluation. It could be due to a cluster headache, but secondary causes such as subarachnoid hemorrhage, reversible cerebral vasoconstriction syndrome (RCVS), carotid artery dissection, or other intracranial conditions should be excluded first.
Next Steps
I recommend that you visit the nearest emergency department today for a neurological examination and urgent non-contrast CT brain. If the CT is normal but suspicion remains high, CT angiography/MR angiography and further evaluation by a neurologist or neurosurgeon may be needed. Seek immediate medical attention if the headache is the worst of your life or is associated with vomiting, weakness, numbness, vision changes, confusion, or seizures.