Cracked mouth corner: Introduction. Cracked mouth corner: Cracked skin at the corner of the mouth. See detailed information below for a list of 10 causes of Cracked mouth corner, Symptom Checker, Assessment Questionnaire, including diseases and drug side effect causes.racked mouth corner: Introduction. Cracked mouth corner: Cracked skin at the corner of the mouth. See detailed information below for a list of 10 causes of Cracked mouth corner, Symptom Checker, Assessment Questionnaire, including diseases and drug side effect causes.
Thyroid disorders can range from a small, harmless goiter (enlarged gland) that needs no treatment to life-threatening cancer. The most common thyroid problems involve abnormal production of thyroid hormones. Too much thyroid hormone results in a condition known as hyperthyroidism.
Personality disorders. Overview. A personality disorder is a type of mental disorder in which you have a rigid and unhealthy pattern of thinking, functioning and behaving. A person with a personality disorder has trouble perceiving and relating to situations and people. This causes significant problems and limitations in relationships, social activities, work and school.