Generally, they can occur from one of the following causes: 1  Infection. 2  Environmental exposure. 3  Malignancy. 4  Occupational exposure. 5  Collagen vascular disease (an inflammatory condition of the body including the lung) 6  Drugs. 7  Idiopathic (unknown causes)
01-08-2006, 09:34 AM. Check to see if you have the tap marker (handle) turned down to far. The jam nut (lever collar) for holding the marker straight should not be touching the lever bonnet. The bonnet is the nut that holds everything to the faucet. If it is touching, this will cause your sticking Faucet.
âIt is more likely to be caused by the mucus becoming too thick or by irritation of your throat. In my experience, the three most common causes are allergy, gastric reflux, and medications that cause dryness.â. Here are some other common conditions that may cause post-nasal drip: Cold or flu viruses.