You should see a dr. It could be from environmental allergiesAllergic rhinitis
Allergies
Allergies and genetics
Allergy testing
Allergy to mold - dander - dust
Drug allergies
Food allergies, esp. if it is only when you are exposed to them. Could be food allegies as well. Have it checked out. You can get otc claritinClaritin
Claritin reditab
Claritin-d
Claritin-d 24 hour and try.

If you don't want the expense of ClaritinClaritin
Claritin reditab
Claritin-d
Claritin-d 24 hour just to test if it's an allergyAllergic rhinitis
Allergies
Allergies and genetics
Allergy testing
Allergy to mold - dander - dust
Drug allergies
Food allergies. Try benedryl and see if the itchingCauses of vaginal itching
Eye burning - itching and discharge
Itching
Jock itch
Muscle twitching
Vaginal itching stops.  If it does - then it is an allergyAllergic rhinitis
Allergies
Allergies and genetics
Allergy testing
Allergy to mold - dander - dust
Drug allergies
Food allergies ((allergicAllergic conjunctivitis
Allergic reactions
Allergic reactions to medication
Allergic rhinitis reactionAllergic reactions
Allergic reactions to medication
Dermatitis, reaction to tinea
Drug allergies
Febrile/cold agglutinins
Insect bite reaction - close-up
Intradermal allergy test reactions
Positive reaction to allergen
Transfusion reaction)) benedryl can make you drowsy but, it won't raise your bloodAmylase - blood
Bleeding
Blood cells
Blood clot formation
Blood clots
Blood culture
Blood differential
Blood gases
Blood gases test
Blood glucose monitoring
Blood in semen pressurePressure ulcer if that's a concern and if the benedryl works - I would see a doctor for some possible allergyAllergic rhinitis
Allergies
Allergies and genetics
Allergy testing
Allergy to mold - dander - dust
Drug allergies
Food allergies testing.  I've used almost every product out there - Benedryl and Astelin (nasalAllergic rhinitis
Juvenile angiofibroma
Nasal anatomy
Nasal biopsy
Nasal congestion
Nasal cpap
Nasal discharge
Nasal fracture
Nasal mucosa
Nasal mucosal biopsy
Nasal polyps spray) is what works for me...

If it is dust or allergensAllergen
Positive reaction to allergen than your best bet on taking care of the problem is removing these from your current environment. The best way to do this is through a Polarized Media Filter, which works to actually attract the particles to the fibersBronchoscopy
Fiber eze
Sources of fiber and thus doesn't just sit passively.

I used to have a problem with my air until a colleague of mine told me about these filters. I did the research on how they worked and found out it was actually a decent system and I thought it might work quite well. After purchasing I was quite pleased with the results as I no longer had this problem with my air. This should help you out as well, that is if your problem is truly with the air that you breathe.

The best place I've found for price is at www.airlifeone.com. I'd suggest looking for the Electrobreeze brand as it's cheaper and essentially the same as the other product. Another good thing about this site is, when I had questions about the product I talked with these people and they were very easy to work with.

Well, I hope that this helps you out.