3. Sore throat
A sore throat is often caused by viruses. It can be described as a feeling of pain, itchiness, and mild discomfort in a person’s throat. It may be classified into different types based on the part of the throat that it affects. The types include pharyngitis (behind the mouth), tonsillitis (tonsils or the back of the mouth), and laryngitis (voice box). Pain might also be felt like the person talks or swallows. The soreness can be a result of smoking, exposure to air pollutants, colds, influenza, and allergies.
Allergens trigger the immune system to release chemicals that normally cause congestion in the nose, sneezing, watery eyes, and throat irritation. Mucus in the nose that drips down to the back of the throat is called postnasal drip and can inflame or irritate the throat. More serious complications that can arise from this include ear and sinus infections. However, this symptom may or may not develop.