A headache can mean more than stress or exhaustion; it could be something serious.
Did you know? The World Health Organization states that globally, headache disorders affect approximately 40% of the population. Most headaches are benign, but overlooking a red flag sign headache may sometimes delay a serious diagnosis when a condition is life-threatening.
Here are a few things that we need to understand in terms of evaluating when your headache might be something more serious than “just a headache”:
Table of Contents
Understanding Headache Red Flags
The term headache red flags denotes certain signs indicating a possibly serious medical condition. These are more than typical stress headaches. And they indicate the need for evaluation, and sometimes immediate medical care.
- If you experience any of the following, do not ignore them:
- Sudden fever and headache that is unexplained
- Severe headache and body aches lasting for days
- New severe early morning headache that gets worse on waking
- Intense left-side or right-side headache
- Severe headaches after the fever has gone away
These symptoms may lead the healthcare provider to consider infections, blood vessel issues or neurological disease.

Different Types of Headaches Based on Location
Location plays a vital role in identifying causes. Here are some common types of headaches based on location:
Headache Location | Possible Cause |
Pain in the left side of the head and eye | Migraine, sinusitis, eye strain |
Pain in the right eye and the right side of the head | Cluster headache, nerve pain |
Severe headache, back of the head | Tension headache, neck problems, and high blood pressure |
Pain on the top left side of the head | Nerve compression, migraine |
Pain in the lower left side of the head | Sinus issues, vascular problems |
Fact: Cluster headaches are considered one of the most painful forms of headache (NIH).
When Seasonal and Lifestyle Factors Make It Worse
At times, headaches can be triggered or worsened because of environmental and lifestyle factors.
Head Pain in Winter
In winter and cold weather, the blood vessels can result in head pain in winter, which is usually linked to sinus issues or dry air.
Head Pain in Summer
Head pain in summer occurs because of a lack of hydration, direct sun, or a heat reaction. Again, keeping well hydrated is the best prevention.
Headache from Oversleeping
If you sleep too much, it changes your brain’s chemicals. This may cause a headache from sleeping too much.
Using a Phone for a Long Time Can Cause Headaches
Screen time is a modern problem. Long-time phone use causes headaches because of eye strain and posture problems. Limiting usage and taking breaks can help.

When Headaches Come with Other Symptoms
A headache accompanied by additional symptoms is a significant red flag sign headache.
- Fever with leg pain and headache: Possible infectious or viral illness.
- Fever, weakness, headache: Could mean you have dengue, malaria, or meningitis!
- Headache, throat pain: Commonly associated with flu or sinusitis.
- Pain in the brain veins: Could be vascular, e.g., an aneurysm.
If you are thinking, why is my head paining when I bend down? Possibly sinus pressure or increased pressure in the brain.
Do not take these symptoms lightly. These could require urgent intervention.
Red Flags in Everyday Situations
Sometimes, the simplest signs are overlooked.
- Pain in the forehead: Could indicate eye strain or sinus pressure.
- Right-sided head pain: Usually from a migraine, but could also be nerve pain.
- Pain more than a few days after fever: Could highlight post-viral fatigue or other problems.
Make sure to consult with your physician if any of these stick around for longer than a few days.

Diagnostic Tests for Headache Red Flags
Your doctor may recommend tests for the purpose of determining the cause of headaches.
- Blood test for headaches: Infection, inflammation or low iron levels.
- MRI and/or CT scan: To evaluate for any potential changes in the brain.
- Eye examiner: To evaluate your vision or nerves.
Knowing what type of testing to order and when to order testing may even save your life.
Whom to Consult for Serious Headaches?
If you notice any red flags, it is essential to consult a specialist. A neurologist or neurosurgeon will be able to evaluate what else may be the underlying cause.
For example, if you are in Hyderabad, then visiting the top neurosurgeon in Hyderabad will help make sure that you get expert care. Dr Raveesh Sunkara is a neurosurgeon who deals with complex neurologic cases and has used the most up-to-date surgical techniques.
Helpful Advice for Headache Management and Prevention
Although certain headaches may require in-office medical treatment, others can be managed by following less complicated preventative tips or adjustments:
1. Stay hydrated, especially in the summer.
2. Try to avoid sleeping too long and/or changing your sleep-wake cycles.
3. Decrease your screen time, and consider attempts to implement the 20-20-20 eye care rule.
4. Make every effort to have proper posture while you are working or utilising your mobile device.
5. It may be time to book an appointment with the best doctors for headaches in Hyderabad if you consistently get headaches.
Consult with the Experts and Get Relief!
A red flag sign for a headache should not be taken lightly. It can indicate a potential infection, a vascular problem, or a neurological issue to consider. Identifying the correct diagnosis early can help prevent complications.
If you are looking for a trusted expert in surgical treatment options for headaches, consider consulting with Dr Raveesh Sunkara, a well-known neurosurgeon in town. Visit our website to learn more and book a consultation.
It is wiser to seek help before your headache worsens. Use your resources to protect your health!
FAQs
When should I be worried about having a headache?
If the headache appears suddenly and is severe or unexpected, and you are also experiencing other symptoms, that is a red flag.
If I have a fever with headache/weakness, can it be critical?
Yes, it can indicate infections such as dengue, flu, or meningitis; all need medical attention.
Why do I have pain in my right eye and the right side of my head?
This could be a cluster headache or a migraine. An eye examination is also advisable.
Is a blood test necessary for headaches?
Not necessarily, a blood test will provide insight and is best for ruling out possible infections, anaemia, or thyroid issues.
Can using my phone for a long time give me a headache?
Yes, it is possible due to digital eye strain and poor muscle posture. Frequent breaks might help with this.