what are the causes of frequent sore throat?
['Allergies. Allergies to pet dander, molds, dust and pollen can cause a sore throat. ... ', 'Dryness. Dry indoor air can make your throat feel rough and scratchy. ... ', 'Irritants. ... ', 'Muscle strain. ... ', 'Gastroesophageal reflux disease (GERD). ... ', 'HIV infection. ... ', 'Tumors.']