Does chronic myeloid leukaemia cause night sweats?

Night sweats mean sweating enough during sleep to dampen clothing or bedding, rather than simply feeling warm. In chronic myeloid leukaemia, abnormal blood-cell activity can produce whole-body symptoms such as fever, tiredness, or unintended weight change. Night sweating is not specific to this condition: infections, hormonal changes, alcohol, medicines, and other illnesses can have the same effect. A clinician considers the full pattern, examination findings, and blood results.

Write down when the sweating occurs, whether the room or bedding was hot, and any fever, fatigue, bruising, infections, or weight change. Arrange a medical review if episodes recur, soak clothing or bedding, or have no clear environmental explanation. If chronic myeloid leukaemia is known, report a new or worsening pattern to the haematology team and continue prescribed treatment unless they advise otherwise.

Seek urgent medical advice for night sweats with a high fever, shaking chills, severe weakness, confusion, breathlessness, chest pain, or signs of infection. People receiving treatment for chronic myeloid leukaemia should use the urgent contact instructions provided by their care team, especially when fever or infection symptoms develop.

Ask whether your sweating pattern could relate to the leukaemia, treatment, infection, or another cause. Ask which blood tests are needed, how to record temperatures, and which symptoms require immediate contact with your haematology team.