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  • Excessive hair growth (hirsutism)

    Find out about excessive hair growth (hirsutism), including when to see a GP and information about treatments and causes.

  • Hirschsprung's disease

    Hirschsprung's disease is a rare bowel condition that is mainly diagnosed in babies and young children. Read about the symptoms, causes and treatments.

  • Herbal medicines

    Read about herbal medicines and remedies, including what the possible risks are, who shouldn't use them, and what to look for when buying them.

  • Hand, foot and mouth disease

    Find out about hand, foot and mouth disease, including what the symptoms are, how to treat it, and when you should get medical advice.

  • Hair dye reactions

    Read about reactions to hair dye, the signs, symptoms, how to avoid them and what to do when you have a reaction.

  • Gum disease

    Find out more about gum disease, including what the symptoms are, how it's treated and how to prevent it.

  • Guillain-Barré syndrome

    Guillain-Barré syndrome is a very rare and serious condition that affects the nerves. It mainly affects the feet, hands and limbs, causing problems such as numbness, weakness and pain.

  • Gilbert's syndrome

    Read about Gilbert's syndrome, a genetic hereditary disorder where slightly higher than normal levels of bilirubin build up in the blood, causing jaundice.

  • Gestational diabetes

    Find out what gestational diabetes is, what problems it can cause, how it's diagnosed, and what the treatments are.

  • Gender dysphoria

    Gender dysphoria is a term that describes a sense of unease that a person may have because of a mismatch between their biological sex and their gender identity.