What should you know about continuous headache for 3 days?

Persistent headache can occur with dehydration, poor sleep, missed meals, eye strain, stress, a common cold, allergic rhinitis, or sinus symptoms. A headache can also accompany COVID-19, dengue fever, or heat exhaustion. These links do not identify the cause on their own, so notice the full pattern rather than assuming a diagnosis.

Record when the pain began, where it is felt, whether it throbs or presses, and any fever, blocked nose, vomiting, light sensitivity, rash, weakness, or recent injury. New headaches that keep returning or steadily intensify should be assessed by a clinician.

Rest in a quiet, cool room, drink fluids regularly, eat if you have missed meals, and reduce bright screens for a while. Gentle neck relaxation may help when muscle tension is involved. Use only pain medicine that is safe for you and follow its label or a clinician's advice; avoid taking repeated doses more often than directed.

Arrange medical advice soon if the headache has no clear improvement after three days, interferes with normal activities, follows a head injury, or is becoming more frequent. Bring a list of medicines and any temperature readings to the appointment.

Seek emergency care for a sudden explosive headache, new weakness or numbness, trouble speaking, fainting, seizure, confusion, stiff neck with fever, repeated vomiting, vision loss, or difficulty walking. Get urgent assessment for a severe headache during pregnancy or after a head injury. Do not drive yourself if you feel confused, faint, or unsafe.

Ask what pattern your symptoms suggest, whether you need an examination or testing, which pain-relief options fit your health history, and how to prevent headaches from becoming frequent.