Myelofibrosis usually develops slowly. In its very early stages, many people don't experience signs or symptoms. But as disruption of normal blood cell production increases, signs and symptoms may include:

  • Feeling tired, weak or short of breath, usually because of anemia
  • Pain or fullness below your ribs on the left side, due to an enlarged spleen
  • Pale skin
  • Easy bruising
  • Easy bleeding
  • Excessive sweating during sleep (night sweats)
  • Fever
  • Frequent infections
  • Bone pain

When to see a doctor

Make an appointment with your doctor if you have any persistent signs and symptoms that worry you.

Mar. 25, 2014

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