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Definition Hepatitis refers to an inflammatory condition of the liver. It’s commonly caused by a viral infection, but there are other possible causes of hepatitis. These include autoimmune hepatitis and hepatitis that occurs as a secondary result of medications, drugs, toxins, and alcohol. Autoimmune hepatitis is a disease that occurs …

Overview Hypospadias is a congenital defect noted in boys. The location of the meatus (outlet for urine on the penis) is located on the undersurface of the penis rather than on the tip of the penis. Most often this is noted at the time of birth. The foreskin does not …

What is Hyperemesis Gravidarum? Hyperemesis gravidarum is a severe and persistent form of morning sickness that occurs during pregnancy. While morning sickness is common in early pregnancy and often involves mild nausea and vomiting, hyperemesis gravidarum is characterized by excessive, unrelenting nausea and vomiting that can lead to dehydration, electrolyte …

What is Hennekam Syndrome? Hennekam syndrome, also known as Hennekam lymphangiectasia-lymphedema syndrome (HS), is an extremely rare genetic disorder characterized by a variety of physical and developmental abnormalities. It falls under the category of lymphatic dysplasia disorders, affecting the lymphatic system, which is responsible for maintaining the body’s fluid balance …

Overview Herniated disc, often referred to as a slipped disc or ruptured disc, is a common spinal condition that can cause discomfort and pain. It occurs when the outer layer of a spinal disc, which acts as a cushion between the vertebrae, weakens or tears, allowing the inner gel-like material …

Definition Horner syndrome is a condition impacting the eye and adjacent facial tissues on one side, arising due to the paralysis of specific nerves. This syndrome can manifest at any stage of life; approximately 5 percent of those affected have it since birth (congenital). Horner syndrome is marked by the …

What is Hemifacial Spasm? Hemifacial spasm causes involuntary painless twitching on one side of the face due to malfunctioning of the seventh cranial nerve, also known as the facial nerve. It causes the muscles on one side of the face to contract. In its mildest form, the condition may cause …

Definition Hearing loss, or hearing impairment, is the partial or total inability to hear sounds in one or both ears. It can range from mild to profound and can be caused by factors such as age, exposure to loud noises, genetic conditions, illnesses and infections, ototoxic medications, or trauma. It …