Hello. Thanks for asking from HCM. I can understand your concern. From your question, it is not clear whether your diagnosis has been made by you or doctor. If you are a known case of sinusitis and having headache, you can follow few tips to relieve pain : Take bed rest : Steam inhalation 4 to 5 times daily : Avoid cold food or liquids, cold environment. : Take hot or warm food or liquids to relieve sinus opening : Use warm saline nasal drops every 2-3 hours to open sinus : You can take combination of Cetrizine-Paracetamol-Xylometazoline combination after proper prescription. It will decrease sinus edema, secretion and relieve headache. : You can take antibiotic therapy like Co-amoxyclav after proper prescription. Usual dose what I prescribe, is 625mg thrice a day for 7 days in adult patients. If still no relief or diagnosis of sinusitis was made by you, consult doctor. The doctor will examine you and take details of your headache to reach upto some diagnosis. He might get some blood investigations, check vision and BP to confirm. Further treatment will be decided after it. Thanks. Take care.