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  • Dystonia

    Dystonia is the name for uncontrolled and sometimes painful muscle movements (spasms). Find out about the main symptoms, types and treatments.

  • Dyslexia

    Read about dyslexia, a common type of learning difficulty that can cause problems with reading, writing and spelling.

  • Dysentery

    Find out about dysentery, including the symptoms, when to see a GP, treatment, how to reduce your risk of getting it and how to avoid passing it on to others.

  • Dysarthria (difficulty speaking)

    Find out more about dysarthria, which is where you have difficulty speaking because the muscles used for speech are weak.

  • Dupuytren's contracture

    Find out about Dupuytren's contracture (Dupuytren's disease), which affects the hands and fingers and causes 1 or more fingers to bend into the palm of the hand.

  • Dry mouth

    Find out about dry mouth, including what causes it and things you can do to help ease it yourself.

  • Dry eyes

    Find out what causes dry eyes and what you can do to help ease it.

  • Down's syndrome

    Down's syndrome is when you're born with an extra chromosome.

  • Double vision

    Find out about double vision (diplopia), including how to tell if you have it, what can cause it and when to get medical help.

  • Do not attempt cardiopulmonary resuscitation (DNACPR) decisions

    DNACPR means if your heart or breathing stops your healthcare team will not try to restart it. A DNACPR decision is made by you and/or your doctor or healthcare team.