What should you know about melatonin and headache?

Headache can follow a change in sleep timing, the melatonin product itself, or taking more than your clinician advised. It can also arise from dehydration, heat exhaustion, a common cold, COVID-19, allergic rhinitis, chronic sinusitis, or anxiety. Congestion, facial pressure, fever, thirst, dizziness, poor sleep, or worry may point toward a different explanation. A single mild episode is different from a severe, repeated, or rapidly worsening headache. Note when you took melatonin, when pain began, where it is, and what else you felt.

Check the product instructions and ask a pharmacist or clinician whether to continue it, particularly if the headache returns after each dose or you take other medicines. Drink fluids regularly, avoid excess heat, rest in a quiet room, and keep a steady sleep routine. Avoid taking extra doses to compensate for poor sleep. Use a pain medicine only if it is suitable for you and follow the label or professional advice. A symptom diary can help distinguish a repeated medicine-related pattern from an infection, sinus problem, or environmental trigger.

Get emergency help for a sudden severe headache, weakness or numbness, trouble speaking, fainting, confusion, a stiff neck with fever, repeated vomiting, new vision loss, or a head injury. Seek prompt medical advice for a headache that keeps returning, steadily worsens, or comes with high fever, marked dehydration, or a new rash. Do not drive if pain, dizziness, or drowsiness affects alertness.

Could melatonin be contributing to this headache? What other causes fit my symptoms? Is my product suitable with my medicines? Which warning signs should prompt urgent care?