Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.

Showing 91 - 107 of 107 results.

Hyperthyroidism means your thyroid gland is too active. This tiny gland is found in your neck. An overactive thyroid gland makes too much thyroid hormone. This makes your metabolism work at a faster rate.

Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is a disease that causes thickening (hypertrophy) of the heart muscle. The heart cells enlarge more than they should and scarring is often found between the cells.

Hypocalcemia in the Newborn

Hypocalcemia is when a person doesn't have enough calcium in the blood. In babies, it’s called neonatal hypocalcemia. Your baby can get it at different times and from different causes.


Hypoglycemia is low blood sugar (glucose). Hypoglycemia may be a condition by itself, or it may be a complication of diabetes or another disorder.

Hypoglycemia in a Newborn Baby

Hypoglycemia is when the level of sugar (glucose) in the blood is too low. Glucose is the main source of fuel for the brain and the body. In a newborn baby, low blood sugar can happen for many reasons. It can cause problems such as ...

Hypoglycemia in Children

Hypoglycemia is when the level of sugar (glucose) in the blood is too low. Glucose is the main source of fuel for the brain and the body. The normal range of blood glucose is about 70 to 140 milligrams per deciliter (mg/dL). The amount ...


Hypoparathyroidism occurs when 1 or more of your parathyroid glands are underactive. Here's what you need to know.

Hypoparathyroidism in Children

Hypoparathyroidism is when the parathyroid glands don’t make enough parathyroid hormone. The parathyroid glands are 4 tiny glands on the thyroid. The hormone they make helps manage levels of calcium in the bloodstream. Low levels of the ...

Hypopharyngeal Cancer

The pharynx is an area in the neck and throat. It is divided into three sections: nasopharynx is the top section, oropharynx is the middle section, and hypopharynx is the lowest section.The hypopharynx is the below the back of the throat...


Hypopituitarism happens when your pituitary gland is not active enough. As a result the gland does not make enough hormones.

Hypopituitarism in Children

Hypopituitarism means that the pituitary gland is not working normally. The pituitary gland is a pea-sized gland located at the base of the brain. It’s the master endocrine gland in the body. The pituitary gland normally releases as many...

Hypoplastic Left Heart Syndrome (HLHS) in Children

Hypoplastic left heart syndrome (HLHS) is a group of defects of the heart and large blood vessels. A child is born with this condition (congenital heart defect). It occurs when part of the heart doesn't develop as it should during the ...


Hypospadias occurs when the urethral opening is below the tip of the bulbous end of the penis (glans). The opening can be on the glans along the shaft, at the pouch that holds the testicles (scrotum) or between the scrotum and the anus ...

Hypospadias in Children

Hypospadias is a problem where the opening of the urethra is not at the tip of the penis. With hypospadias, the end of the tube is lower down on the underside of the penis. Or it may be in the scrotum.


Hypothermia occurs when body temperature drops below 95°F (35°C). It is a medical emergency. Learn more about symptoms, diagnosis, and treatments.

Hypothermic Circulatory Arrest

Hypothermic circulatory arrest temporarily suspends blood flow under very cold body temperatures. At cold temperatures, cellular activity levels slow significantly so blood circulation can be stopped for up to 40 minutes without harm to ...


Hypothyroidism is the most common type of thyroid disorder. It means your thyroid gland is not active enough. This tiny gland is found in your neck. Its job is to make thyroid hormone. If the gland is underactive, it may not make enough ...

Showing 91 - 107 of 107 results.
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