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  • Turner syndrome - Causes

    Turner syndrome is a genetic condition caused by a missing or incomplete sex chromosome.

  • Tuberous sclerosis - Diagnosis

    To diagnose tuberous sclerosis, you'll be asked about your family's medical history. You'll also have a number of tests to look for signs of the condition.

  • Trigeminal neuralgia - Diagnosis

    Find out how trigeminal neuralgia is diagnosed. As the pain is often felt in the jaw, teeth or gums, many people often visit a dentist initially, rather than a GP.

  • Trichomoniasis - Diagnosis

    Trichomoniasis can sometimes be difficult to diagnose because symptoms are similar to those of other sexually transmitted infections (STIs).

  • Transient ischaemic attack (TIA) - Diagnosis

    It's important to be assessed by a healthcare professional as soon as possible if you think you have had a transient ischaemic attack (TIA).

  • Thalassaemia - Diagnosis

    Read about screening for thalassaemia in pregnancy, testing for the condition later in life and getting a test to see if you're a carrier of thalassaemia.

  • Subdural haematoma - Diagnosis

    Read about how subdural haematomas are diagnosed, including how the symptoms are assessed and what scans are carried out.

  • Diagnosing a stroke

    Strokes are usually diagnosed through blood tests, scans and other tests. Doing this may also show what caused it.

  • Stomach ulcer - Diagnosis

    Read about how stomach ulcers are diagnosed, including tests for H. pylori bacteria and a procedure to look inside your stomach called a gastroscopy.

  • Stillbirth - What happens if your unborn baby dies

    Read about what happens after stillbirth, finding the cause of death and the support available to you and your family.