Cracks at corner of mouth and Mouth sores. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms cracks at corner of mouth and mouth sores including Angular cheilitis, Coxsackie virus infection, and Mouth (oral) cancer.There are 10 conditions associated with cracks at corner of mouth and mouth sores.The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.1  Angular cheilitis.here are 10 conditions associated with cracks at corner of mouth and mouth sores. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions. 1  Angular cheilitis.
Thyroid Disease Symptoms and Signs. Thyroid disease is a common problem that can cause symptoms because of over-or under-function of the thyroid gland. The thyroid gland is an essential organ for producing thyroid hormones, which maintain are body metabolism.The thyroid gland is located in the front of the neck below the Adam's apple.hyroid Disease Symptoms and Signs. Thyroid disease is a common problem that can cause symptoms because of over-or under-function of the thyroid gland. The thyroid gland is an essential organ for producing thyroid hormones, which maintain are body metabolism.
1 Results in permanent hypothyroidism, which can be treated. 2  Subacute thyroiditis (also called de Quervain's thyroiditis). 3  Possibly caused by a viral infection. 4  Causes pain in the thyroid and symptoms of hyperthyroidism, followed by hypothyroidism.5  Symptoms improve within a few months. Results in permanent hypothyroidism, which can be treated. 2  Subacute thyroiditis (also called de Quervain's thyroiditis). 3  Possibly caused by a viral infection. 4  Causes pain in the thyroid and symptoms of hyperthyroidism, followed by hypothyroidism. 5  Symptoms improve within a few months.