What is a sore throat? A sore throat is a painful, dry, or scratchy feeling in the throat. Pain in the throat is one of the most common symptoms. It accounts for more than 13 million visits to doctor’s offices each year. Most sore throats are caused by infections, or by environmental factors like dry […]

Allergic conjunctivitis usually happens when a person’s eyes come into contact with an allergen, a substance that makes the body’s immune system overreact. The eye becomes sore and inflamed. Symptoms occur because the overreacting immune system makes the body release histamine and other active substances through mast cells. The blood vessels dilate, or expand, and […]