Septoplasty is performed for deviated nasal septum, that can be a reason for a case of blocked nose.
Hope you were examined for other causes for blocked nose as nasal polyps, blockages at the back of the nose, and chronic allergies.
Deviated or irregular nasal septum, can lead to increased, thin nasal secretions, resulting in experience of postnasal drip.
You have predisposing factors for developing sinus headache, but without positive exams results, is impossible.
You are probably having migraine headache, that is very often misdiagnosed as a sinus headache (9 in 10 people with symptoms of sinus headache, in fact suffer from migraine).

You can talk with your neurologist about transformed migraine, a daily migraine, that happens in a migraine sufferer with a history of medication overuse.

Septoplasty may provide a relief of your headaches, but, your migraines may continue.
There is no guarantee that your migraine will respond to surgery.

Best wishes!
Marija

Hi,

I am a fellow migraine sufferer. I had migraines often (about 20 per month). The migraines increased to daily for several years. My neurologist finally suggested that I completely eliminate caffiene from my diet. It took several months to get any relief because using drugs like initrex was out of the question too. They have a similar mechanism of action as caffiene. 1 & 1/2 years later, I only have menstrual headaches. It just so happens I am also scheduled to have septoplasty with turbinate cobilation in July 2009. I am doing this because I also thought that my sinus issues could help relieve my migraines. I hope this information helps.