The most common causes for an itching throat are allergies, or hay fever, and environmental factors, such as exposure to certain chemicals. An itching throat may also be caused by the common cold or other upper respiratory infections. In many cases, an itching throat may be the direct result of a cough. Smokers often suffer from itching throat, as do heavy drinkers. Talking for long periods or screaming may also cause these symptoms.
Air pollution may irritate sensitive mucus membranes that line the throat and pharynx. Particles of smoke, dust, and other debris that become airborne contaminants may cause irritation of the throat. This often leads to an itching throat and dry cough.
In addition, dry air often can cause a dry, itchy throat. This typically occurs during cold winter months, rather than summertime. The lack of humidity, especially in homes with central heating, may cause irritation in certain individuals. As dry air conditions become frequent, an insufficient production of mucus, which normally lines the throat and membranes, can cause an itching throat.
When a person is ill due to infection, he may become dehydrated. This can happen when he does not consume adequate fluids. Dehydration may reduce mucus production, thus causing a feeling of itchiness in the throat. The way to counteract this is by increasing fluid intake. There are throat drops or lozenges that may provide relief from an itchy throat, and drinking tea with honey may provide soothing relief as well.
Individuals who smoke tobacco products may suffer from chronic dry mouth and itchy throat. The nicotine in tobacco causes the irritation many people experience. The way to eliminate dry or itching throat due to tobacco use is to quit smoking. Quitting smoking will also reduce chances of developing other more serious health conditions, such as cancer or emphysema. Drinking alcohol and consuming excessive amounts of caffeine may also produce similar symptoms of scratchy throat and itchiness.
For some professional singers and public speakers, itching of the throat becomes a regular issue. This is generally due to straining the vocal cords, which often will cause hoarseness and itching of the throat. Coating the throat with honey is a remedy many people use to help ease associated discomfort caused by singing or speaking frequently.