Get rid of the carpet. Get an air purifier off of QVC. Start building up you immune system. Take vitamin C get the 1000mg at walmart. Take 5 three times a day for a couple of days then back off to 3000-5000mg a day. Your body has to fight something so help it fight. I get honey from local bees. Maybe your antihistamines are drying out the back of your throat... The key is getting your immune system built up. Google natural cures. hot tea and honey. Honey is a superfood. Try it!!!
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Something stuck in the throat or irritating it can be due to post nasal drip, if you have recurrent cold and sinusitis. It can also be an allergic reaction to something you eat. Common allergens causing post nasal drip are pollen, mold, dust, pet dander, cosmetics or drugs. You must get an allergy test done, either a skin test or by RAST, to know what you are allergic to. Seasonal allergies are generally due to pollen or dust. Any cosmetic you apply on face or eye or even for your hair like shampoos or dyes too can cause allergies.
The other possibility is that you have a foreign body in nose, deviated nasal septum. This makes a person prone to repeated infections and allergy like symptoms.
Another possibility is laryngopharyngeal reflux. It can also be gastric reflux due to weak esophageal sphincter or due to hiatal hernia. This throws the stomach content into the throat without heartburn. Raise head end of bed. Take Omeprazole empty stomach in morning and an antacid gel at bedtime. Refrain from smoking, alcohol, fuzzy drinks and spicy food. See if these tips help. Take care!