Reactions to airborne allergens can cause chronic or erratic coughing spells. According to MedlinePlus, an allergen is a foreign substance the body doesn't recognize and therefore attempts to protect itself from it. Coughing from allergies is due to irritation and inflammation in the throat from the release of histamine. If a cough produces thick, yellow phlegm with blood, seek immediate medical advice. Allergy coughing symptoms will start as soon as the person is exposed to the allergen and will subside once the allergen is removed. According to the Austin Diagnostic Clinic, the best treatment for allergic coughing is to address the allergic reaction that's causing the cough.
Cough
According to the American Academy of Allergy, Asthma and Immunology, a cough is a common symptom of allergy. The allergy cough may come on suddenly and lead to throat irritation. The histamine levels in the throat aggravate the cough reflex, sending messages to the brain to begin coughing, according to the Austin Diagnostic Clinic. The body will begin to couth with the purpose of clearing the throat of any irritants or congestion.
Sore Throat
A sore throat is a symptom of an allergy cough due to irritation and postnasal drip, according to the America Academy of Otolaryngology. Postnasal drip is a result of excess secretions in the sinus cavity dripping down the back of the throat. As a result of the secretions, the throat becomes irritated and inflamed. A sore throat can also be a sign of a secondary infection in the throat and needs to be evaluated by a doctor.
Difficulty Swallowing
An allergy cough may make it more difficult to swallow. Allergies affecting the throat can make it feel like there is a lump in the throat. If the throat is inflamed from an allergic reaction, it can also cause the throat to swell. This can lead to a serious complication, such as the inability to breathe.
Chest Tightness and Wheezing
According to the Asthma and Allergy Foundation of America, an allergy cough from allergy-induced asthma can cause chest tightness and wheezing. Chest tightness is the result of inflammation in the lungs and airways, which leads to coughing. Wheezing is a high-pitched sound produced when air passes through obstructed airways. Allergy-induced asthma should be diagnosed by an allergist and treated with prescribed inhalers and antihistamines.
