I have studied your case.
possibility of complain related sinusitis
.Inflammation of sinus leads to headache.
Routine blood investigation like complete blood count
, ESR, CRP, MRI brain will be useful.
Blood investigations are useful tool for screening but there are nonspecific tools available.
Management will depend on clinical examination and investigation reports .
Some medication like analgesic
[paracetemol] and vertin
will reduce pain
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