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Overview A hernia occurs when an organ pushes through an opening in the muscle or tissue that holds it in place. For example, the intestines may break through a weakened area in the abdominal wall. Hernias are most common in the abdomen, but they can also appear in the upper …

Definition Hyperhidrosis, which is sweating in excess of that required for normal thermoregulation, is a condition that usually begins in either childhood or adolescence. Although any site on the body can be affected by hyperhidrosis, the sites most commonly affected are the palms, soles, and axillae. See the image below. …

Definition Heller’s Syndrome is a rare developmental disorder characterized by late onset of developmental delays in language, social function, and motor skills. CDD has some similarity to autism and is sometimes considered a low-functioning form of it. CDD is similar to dementia skills already learned and acquired suddenly disappear and …

Definition Hyperhidrosis is a medical condition where an excessive amount of sweat is produced by the sweat glands. The amount of sweat produced is out of proportion to the amount required to cool the body. This does not mean that sweating a lot after running on a hot summer’s day …

Definition Hypothyroidism – also called underactive thyroid – is the most common thyroid disorder. It happens when your thyroid gland doesn’t produce enough thyroid hormone, which is essential because thyroid hormone helps regulate important body processes, such as your metabolism. But with low thyroid function, these body processes slow down. …

Definition Hyperthyroidism (overactive thyroid) is a condition in which the thyroid gland produces the high level of the hormone thyroxine. In other words, it can be called as overreactive thyroid. The thyroid gland is an organ located in the front of your neck and releases hormones that control your metabolism …

Definition Hyperkeratosis is when the outer layer of the skin is thickened. The outer layer of the skin will contain keratin, which is a protective protein. It is a form of keratosis, which is a skin disorder caused by overproduction of keratin. It occurs most often on skin that has …

Definition A hydrocele is a sac filled with fluid that forms around a testicle. This occurs when the fluid collects in the thin sheath surrounding a testicle. Hydroceles are most common in babies and usually disappears without treatment by age 1. Older boys and adult men can develop a hydrocele …