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.
Hyperthyroidism is a disorder in which the thyroid gland makes and releases more thyroid hormone than the body needs. Your doctor may say you have an  overactive thyroid  or refer to the condition as overactive thyroid disease..Your thyroid gland is located in the front of your neck.Hormones released by the thyroid affect nearly every part of your body from your brain to your skin and muscles. They play a crucial role in controlling how your body uses energy, a process called metabolism.he most common cause of hyperthyroidism is an autoimmune condition called Graves' disease. The body's immune system creates an antibody that causes the gland to make an excessive amount of thyroid hormone. Graves' disease runs in families and usually affects younger women.