It seems that you are suffering from allergic rhinitis. The treatment of allergic rhinitis consists of the following.
1. Avoidance of allergens if possible.
2.Steroid nasal spray ( most helpful and cost effective).
3. Oral anti-histaminics.
4.Allergen sensitivity test and desensitization Routine blood tests and serum IgE level may be done before commencing treatment, but is not essential.
Next Steps
Consult a good ENT doctor who will decide what treatment will best suit you.
Health Tips
Do not indulge in self medication, which may be dangerous.