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Hepatitis B

Hepatitis B is a viral inflammation of the liver passed on through blood and other body fluids.

Hepatitis C

Hepatitis C is a viral infection that settles in the liver and can go years without announcing itself.

Hereditary haemochromatosis

Haemochromatosis is a built-in error in the way the body keeps count of iron. The gut takes more of it out of food than is needed, and the surplus has…

Hereditary haemorrhagic telangiectasia

Hereditary haemorrhagic telangiectasia, also known as Osler-Weber-Rendu syndrome, is a congenital quirk in the way blood vessels are built.

Hereditary spastic paraplegia

The name covers not one illness but a whole family of rare inherited conditions with the same outcome: the long nerve fibres running from the brain down the…

Hernia

A hernia is internal contents pushing out through a weak point in the muscular wall that ought to hold them in.

Herpes simplex eye infection

This is inflammation of the eye caused by the herpes simplex virus, the same one behind cold sores on the lip.

Herpetic whitlow

Herpetic whitlow is a herpes infection on a finger. It looks so much like an ordinary bacterial whitlow that it is regularly incised surgically — and that is…

Hiatus hernia

The diaphragm is the muscular sheet dividing the chest from the abdomen, and the oesophagus passes through it at a narrow opening.

Hidradenitis suppurativa

Hidradenitis suppurativa is a long-term skin condition in which painful lumps keep appearing in the armpits, the groin, under the breasts and between the…

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