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hyperprolactinaemia

A condition involving excess levels of the hormone prolactin in the blood.

hypertension

High blood pressure.

hyperthryoidism

The overproduction of thyroid hormones by an overactive thyroid gland.

hypertrichosis lanuginosa

A rare codition characterised by the rapid growth of long, fine hair, particularly around the eyebrows, forehead, ears and nose.

hypertrophic obstructive cardiomyopathy (HOCM)

Inflammation of the heart muscle (cardiomyopathy) due to enlargement (hypertrophy) of the muscle in the wall of the left ventricle (the pumping chamber of the heart), obstructing blood flow

hypertrophic pulmonary osteoarthropathy

A syndrome that affects some people with lung disease. It most often affects the bones of the ankles and wrists.

hypertrophy

An increase in the size of the tissue of an organ resulting from an increase in the size of its individual cells.

hyperventilation

A fast rate of breathing.

hypnosis

A sleep-like state induced by a hypnotist.

hypnotherapy

Any form of psychotherapy that uses hypnosis.

hypo

Prefix suggesting a deficiency, lack of, or small size.

hypocalcaemia

An abnormally low level of calcium in the blood. The most common cause is vitamin D deficiency.

hypoglycaemia

An abnormally low level of glucose in the blood.

hypogonadism

Overactivity of the testes that results in an over-production of hormones.

hypokalaemia

A deficiency of potassium in the blood.

hypomenorrhoea

Light or scanty menstrual periods.

hypoparathyroidism

A rare endocrine disorder in which the parathyroid glands in the neck do not produce sufficient levels of parathyroid hormone.

hypopituitarism

The inability of the pituitary gland to produce sufficient hormones.

hypoproteinaemia

A condition in which there is an abnormally low level of protein in the blood.

hypothalamus

A region of the brain.

hypothyroidism

Underproduction of the thyroid hormones by the thyroid gland.

hypotonia

Abnormal muscle slackness.

hypoxaemia

Reduced oxygen levels in the blood.

hypoxia

A lack of oxygen.