According to the ABQ Journal, post-nasal drip is a condition where mucus secretions drip in the back of the throat. Post-nasal drip is the result of another pre-existing condition such as allergies, the common cold or a nasal deformity. In order to properly treat post-nasal drip, the cause needs to be identified and treated, according to the American Academy of Otolaryngology. Post-nasal drip is commonly harmless, but it can lead to complications or be a sign of a sinus complication. An eye, nose and throat specialist can determine the cause and proper treatment for post-nasal drip.
Throat Irritation
As phlegm drips down the back of the throat, it can cause irritation that leads to a sore throat, according to the American Academy of Otolaryngology. It is uncommon for an infection to develop because of post-nasal drip, but it is possible. A person with a sore throat for more than seven days should seek medical advice. Throat irritation can be treated by drinking hot herbal tea and sucking on throat lozenges.
Swallowing
Swallowing can be affected from post-nasal drip. Young children may experience difficulty swallowing and can choke on the excessive amount of mucus. The accumulated mucus swallowed during sleep can cause a sour stomach upon waking, according to the American Academy of Otolaryngology.
Bad Breath
According to Medline Plus, bad breath is a complication of post-nasal drip. Medline Plus recommends seeing a doctor if the mucus develops into a foul smell, as this may be a sign of an infection.
Coughing
The constant dripping in the back of the throat can cause consistent coughing that can become bothersome. Once the coughing reflex is aggravated, it may be difficult to stop. Coughing from post-nasal drip is treated with over-the-counter cough suppressants that restrict the coughing reflex to become unresponsive. Cough suppressants should not be taken without a doctor's approval.
Breathing and Sleeping Difficulty
The ABQ Journal states that the accumulation of mucus in the throat can lead to difficulty breathing and sleeping. The urge to spit up is common to clear the airways. If someone has severe difficulty breathing, he should seek medical attention immediately as it may be the sign of a more severe condition. Sleeping is more difficult because the congestion in the nose and throat can become bothersome, causing constant waking.


