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Extreme fatigue and headache

Where Headache is typically felt, shown on a simplified body outline
Illustration: Where Headache is typically felt, shown on a simplified body outline

Short answer

Extreme fatigue and headache can result from dehydration, infection, heat exposure, sinus symptoms, or stress, so the pattern and accompanying signs guide next steps.

This answers one question. It is not a diagnosis and does not replace an assessment by a licensed doctor.

At a glance

Record
Onset, location, severity, fever, fluids, and travel.
Immediate support
Rest in a cool place and drink small amounts regularly.

Possible explanations

A blocked or inflamed nose and face may point towards allergic rhinitis or chronic sinusitis. A common cold or COVID-19 may cause headache alongside reduced energy and other respiratory symptoms. Heat exhaustion and dehydration can cause headache, weakness, thirst, dizziness, and reduced concentration. Anxiety can also disturb sleep and tighten scalp or neck muscles. Dengue fever is a consideration after relevant mosquito exposure, particularly with fever, marked aches, nausea, or a rash.

What you can do now

Move to a cool place after heat exposure, sip fluids, rest, and reduce intense activity. Note when the headache began, where it hurts, whether light or movement worsens it, and any fever, congestion, vomiting, rash, or recent travel. Use medicines only as directed on the label and consider medical advice if symptoms are severe, unusual, or not settling.

Urgent warning signs

Get urgent help for a sudden severe headache, weakness on one side, trouble speaking, seizure, confusion, fainting, stiff neck, or new vision loss. Seek prompt assessment for persistent vomiting, inability to drink, high fever, a spreading rash, or worsening symptoms after heat exposure.

What to ask

Could dehydration, heat, sinus inflammation, infection, or a medicine explain this? Do I need an examination or testing? Which pain relief is appropriate for me?

Find care

General Clinics & Polyclinics in Abu Dhabi

That answer is general. If you want it applied to your own case, these are licensed general clinics & polyclinics listed in Abu Dhabi.

City
See every listing in Abu Dhabi

Ordered by verification status and how complete each clinic's public record is, then alphabetically. This is a directory listing, not a ranking — Zavis does not rate or recommend providers.

A factual listing drawn from the DHA, DOH and MOHAP licence registers. It is not a referral, an endorsement, or advice that any of these providers is right for you.

Questions people ask

Can dehydration cause both symptoms?

Yes. Fluid loss can contribute to headache, weakness, dizziness, and tiredness.

When is a headache an emergency?

A sudden severe headache or one with neurological changes, confusion, seizure, or stiff neck needs urgent assessment.

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Medical disclaimer. This page is general health information, not medical advice, and it cannot diagnose you. Always consult a licensed healthcare provider about your own symptoms and treatment. In an emergency in the UAE, call 998 for an ambulance.