Search results for (2025). Bleeding in the digestive system (GI bleed) . Health A-Z.

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• COVID-19 testing

  Find out about COVID-19 rapid lateral flow tests, including who can get them for free on the NHS, how to do the test, and what your result means.

• MMR (measles, mumps and rubella) vaccine

  Find out about the MMR vaccine for measles, mumps and rubella, including who should have it, when it's given and possible side effects.

• Breast reduction (male)

  Find out about male breast reduction surgery, a procedure for men with large breasts (gynaecomastia), including if it's available on the NHS, how much it costs, finding a surgeon, what the procedure involves, and what to do if things go wrong.

• Probiotics

  There's some evidence that probiotics may be helpful in some cases, but there's little evidence to support many health claims made about them.

• Causes of laryngeal cancer

  Find out about the causes of laryngeal cancer and who is most at risk of getting it.

• Osteomyelitis

  Find out about osteomyelitis, including who's most at risk of getting it, what the symptoms are, what to do if you think you have it, and how it's treated.

• Dandruff

  Find out what causes dandruff, what you can do to get rid of it and when to get medical advice.

• Labyrinthitis and vestibular neuritis

  Read about labyrinthitis and vestibular neuritis (also known as vestibular neuronitis), including advice about symptoms, when to get medical help and treatment.

• HPV vaccine

  Find out about the HPV vaccine, including who it's for, how to get it and possible side effects.

• 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.