If by any possibility if you have camphor with you ,heat some coconut oil and add 1 camphor into it.apply this oil over your frontal and temporal area and steam ..do this regularly for 2 weeks.This sounds more like a sinus infections, possibly sphenoid which I will be able to evaluate only upon seeing your MRI film
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You need a proper course of Ayurvedic medicines with which the pain will certainly subside.you will be able to see the difference in the very first 2 weeks.
accessory methods like steaming can help only in a minor way since the infection seems to be pretty intense