Unstable Angina in Korea
Overview Unstable Angina is a serious and potentially life-threatening condition characterized by sudden chest pain or discomfort due to reduced blood flow to the heart. Unlike stable angina, it occurs unpredictably—often at rest or with minimal exertion—and may not improve with medication. Unstable angina is a medical emergency and a warning sign of an impending […]
Unilateral Hearing Loss (Single-Sided Deafness) in Korea
Overview Unilateral Hearing Loss (UHL), also known as Single-Sided Deafness (SSD), refers to a condition where hearing is significantly reduced or completely lost in one ear, while hearing in the other ear remains normal or near normal. This condition can affect both children and adults and may interfere with sound localization, speech understanding in noisy […]
Unicuspid Aortic Valve in Korea
Overview Unicuspid Aortic Valve (UAV) is a rare congenital heart defect in which the aortic valve has only one functional cusp instead of the normal three. This abnormal valve structure leads to impaired blood flow from the heart to the aorta and can result in serious complications like aortic stenosis or regurgitation. UAV is often […]
Unicornuate Uterus in Korea
Overview Unicornuate Uterus is a rare congenital uterine anomaly in which a woman is born with only one half of a uterus instead of a normal, pear-shaped organ. This malformation occurs during fetal development and may affect fertility, menstrual function, and pregnancy outcomes. Many women remain undiagnosed until they experience difficulty conceiving or maintaining a […]
Unicameral Bone Cyst in Korea
Overview Unicameral Bone Cyst (UBC) is a benign, fluid-filled cavity that forms within a bone, most commonly in children and adolescents. These cysts typically develop in long bones such as the femur or humerus and are often discovered incidentally during X-rays for minor injuries. While they are non-cancerous and often asymptomatic, they can weaken the […]
Unexplained Infertility in Korea
Overview Unexplained Infertility is a diagnosis given when a couple is unable to conceive after 12 months of regular, unprotected intercourse despite having normal results on standard fertility tests. It affects up to 30% of infertile couples and can be emotionally and medically challenging. While the exact cause remains unknown, many treatment options are available […]
Undifferentiated Pleomorphic Sarcoma in Korea
Overview Undifferentiated Pleomorphic Sarcoma (UPS) is a rare and aggressive type of soft tissue cancer that typically originates in the muscles, ligaments, fat, or fibrous tissues of the body. Once known as malignant fibrous histiocytoma, UPS is characterized by its highly variable cell appearance and tendency to grow rapidly. Although it can affect anyone, it […]
Undescended Testicles in Korea
Overview Undescended Testicles is a condition in which one or both testicles fail to move into the scrotum before birth. It is one of the most common congenital abnormalities in male infants and may resolve on its own within the first few months of life. However, persistent undescended testicles may require medical or surgical intervention […]
Underbite in Korea
Overview An Underbite is a dental and skeletal condition in which the lower teeth and jaw extend beyond the upper teeth. This misalignment can affect chewing, speech, facial appearance, and oral health. Underbites vary in severity, ranging from mild cosmetic concerns to significant functional problems. Early diagnosis and orthodontic or surgical treatment can correct the […]
Uncombable Hair Syndrome in Korea
Overview Uncombable Hair Syndrome (UHS) is a rare, non-life-threatening genetic condition that affects the structure of the hair shaft, making hair stand out from the scalp and appear dry, frizzy, and impossible to flatten or comb. The condition usually becomes noticeable in early childhood and often improves or resolves with age. While UHS does not […]