Myelodysplastic syndrome

Also called MDS or Myelodysplasia

Myelodysplastic syndrome (MDS) is a rare group of conditions where the bone marrow does not make enough healthy blood cells. It is a type of blood cancer and mostly affects people over 70. It can cause anaemia, infections and bleeding. In some people it can develop into acute myeloid leukaemia.

Last updated Nov 9, 2026

What it is

Some people with low-risk MDS only need monitoring with regular blood tests.

Treatment may include blood transfusions, medicines to boost blood cell production, chemotherapy and, for some, a stem cell transplant.

Common signs

  • Tiredness and breathlessness from anaemia
  • Frequent infections
  • Bruising or bleeding easily
  • Often found on a routine blood test

How it is usually diagnosed

  • Full blood count and blood film
  • Bone marrow biopsy
  • Genetic tests on the marrow

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Blood counts over time
  • Bone marrow biopsy reports
  • Transfusion records
  • Haematology letters

Questions to ask your doctor

  • Is my MDS low or high risk?
  • How often will I need blood tests?
  • What treatment do you recommend?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • A temperature of 38°C or above, bleeding that will not stop, or feeling suddenly very unwell: get urgent medical help

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources