Headaches: Types, Causes & When to Worry
Most headaches are not dangerous, but they're disruptive — and a few need prompt attention. Here's a clear guide to common headache types and the warning signs.
Most headaches are not dangerous
Common triggers: sleep, stress, hydration
A sudden worst-ever headache needs 911
Recurring headaches are worth assessing
Headaches are extremely common and, in the large majority of cases, not a sign of anything dangerous. Still, understanding the type you get — and knowing the warning signs — helps you manage them and know when to seek care.
Common types
Tension-type headaches are the most common — a dull, band-like pressure, often linked to stress, posture, or fatigue. Migraines tend to be more intense, sometimes one-sided, and may come with nausea or sensitivity to light and sound. There are other types too, and a doctor can help identify yours.
Related readingCould fatigue be playing a role?Tiredness and headaches often travel together — here's what to know.Common triggers
Stress, poor sleep, dehydration, skipped meals, screen time, posture, and certain foods or hormonal changes can all contribute. Tracking your headaches can reveal patterns that help with management.
Warning signs — seek urgent care
Get urgent care for a sudden, severe "worst-ever" headache, a headache with fever and a stiff neck, weakness, numbness, vision changes, confusion or difficulty speaking, a headache after a head injury, or one that is rapidly worsening. These are uncommon but important.
How iCollab can help
For recurring or troublesome headaches, your family doctor or a walk-in physician can assess the pattern, discuss management, and arrange further input if needed. For the warning signs above, call 911 or go to emergency.
This is general information, not medical advice.
Have a concern you'd like looked at?
Book with an iCollab physician, or ask at the walk-in clinic.
Headaches: Types, Causes & When to Worry — FAQ
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