What are the key clinical features and symptoms that should raise suspicion for Acute Myeloid Leukaemia (AML) in a primary care setting?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 16 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

In a primary care setting, several key clinical features and symptoms should raise suspicion for leukaemia, which includes Acute Myeloid Leukaemia (AML), prompting further investigation ,. The recommendations differ slightly for adults compared to children and young people ,.

  • For adults, consider a very urgent full blood count (within 48 hours) if they present with any of the following:
    • Pallor ,
    • Persistent fatigue
    • Unexplained fever ,
    • Unexplained persistent or recurrent infection ,
    • Generalized lymphadenopathy
    • Unexplained bruising ,
    • Unexplained bleeding
    • Unexplained petechiae
    • Hepatosplenomegaly
  • For children and young people, the following symptoms should prompt action:
    • Refer for immediate specialist assessment if they have unexplained petechiae or hepatosplenomegaly ,.
    • Offer a very urgent full blood count (within 48 hours) if they present with any of the following:
      • Pallor ,
      • Persistent fatigue ,
      • Unexplained fever ,
      • Unexplained persistent infection ,
      • Generalized lymphadenopathy ,
      • Persistent or unexplained bone pain
      • Unexplained bruising ,,
      • Unexplained bleeding

Educational content only. Always verify information and use clinical judgement.