You might think you also know the cause: a sinus infection brought on by allergies or a cold.
It seems obvious enoughbut theres a very good chance youre wrong.
How are a sinus headache and migraine similar?

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These symptoms occur due to the way the autonomic nervous system is activated during a migraine attack.
Meanwhile,true sinus headaches are actually rareand occur because of a specific chain reaction.
This leads to a sinus infection, which can cause a buildup of pressure that becomes a sinus headache.
How can I differentiate a true sinus headache from migraine?
There are several clues you could look for to confirm that you have a true sinus headache.
What are the sights that itsactuallymigraine?
How do I treat a sinus headache related to chronic migraine?
As its meant to be.