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  • Swollen glands

    Read about swollen lymph glands, which are usually a sign of infection. Find out what the symptoms are, how to ease them and when to get medical help.

  • Swollen arms and hands (oedema)

    Find out about the causes of swollen arms and hands, what to do about it and when to get help.

  • Dysphagia (swallowing problems)

    Find out more about dysphagia, where you have problems swallowing.

  • Supraventricular tachycardia (SVT)

    Find out about supraventricular tachycardia (SVT), a condition where your heart suddenly beats much faster than normal. SVT is not usually serious but some people may need treatment.

  • Support for people who may have been affected by infected blood

    Find help and support for people affected by infected blood before 1996. Support is available for those affected, their families and anyone who is worried they might be affected.

  • Sunburn

    Find out about sunburn, including what you can do to treat it yourself and when to get medical help.

  • Sudden infant death syndrome (SIDS)

    Sudden infant death syndrome (SIDS) – sometimes known as 'cot death' – is the sudden, unexpected and unexplained death of an apparently healthy baby.

  • Subdural haematoma

    Read about subdural haematoma, a serious condition where blood collects between the skull and the surface of the brain. Find out why it happens, what the symptoms are, and how it's treated.

  • Subarachnoid haemorrhage

    A subarachnoid haemorrhage is an uncommon type of stroke caused by bleeding on the surface of the brain. It's a very serious condition and can be fatal.

  • Stye

    Find out about styes, including what causes them, what you can do to treat them and when to see a GP.