It seems you have an allergic problem, you need to find the source of your allergies and take the necessary actions to avoid them. You can do an allergy test to find the cause by the blood test and scratch test. You will require antihistamines. The following steps may help: - Do steam inhalation(plain steam) regularly - Drink water at an average of 3 liters per day - Use a humidifier in your room - Wiping the face regularly with a towel moist with hot water has also shown to help. - Remove the mould from the house such as on the A?C vents, also clean the fan that may have dust collection - Cover your nose and mouth when exposed to dust or any pollen If condition persists or worsens visit ENT doctor.