I just want to ask if what kind of medicine can I...

Dear Customer
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Treatment options for sinus :
- consult an ENT doctor first to do the needed medical examnation and determine treatment pathway
- treatment options includes :
1. saline spray 
2. corticostiroids spray 
3. corticostiroids pills  or injections 
- antibiotics such as Lefofloxacin is a medication to aid your sinus treatment medication and protect your oral cavity or chest from infections , but not as a treatment for sinus 
- surgical options are availble if medications fail to deliver the symptoms relieve 
What is the surgery for sinus :
Sinus Surgery procedures is procedures to releive sinus symptoms surgically when medication doesnt work , and its minor surgery and safe 
- the cost of Sinus Surgery procedures ranges between 3000 - 5000 $ ( in dubai ) and might be lower 
Causes of sinus :
1. allergic reaction ( most likely ) 
2. nasal polyps 
3. respiratory or oral cavity infections
4. Deviated nasal septum
Our medical opinion about your medical treatment :
- usually doctor prescribe a corticostiroids medication ( spray ) which is mainly lower your body reaction on foreign substance such as dust or smoking , usually start with low dose , treatment option for your case is:
1. higher dose of corticostiroids medication ( spray ) 
2. if spray isnt working , a combination of oral and spray corticostiroids medication would be useful 
3. if not working after the combination , you may need suregry 
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Kind Regards