Does the rash of monkeypox (Monkeypox virus) differ from that of chickenpox (Varicella-zoster virus)?

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Last updated: April 23, 2025View editorial policy

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From the Guidelines

Monkeypox rash differs significantly from chickenpox in terms of lesion development, distribution, and associated symptoms. The key differences between monkeypox and chickenpox rashes are crucial for accurate diagnosis and treatment. Some of the main distinctions include:

  • Lesion development: Monkeypox lesions tend to develop simultaneously and progress through stages uniformly, whereas chickenpox lesions appear in successive crops over several days, showing different stages of development at the same time 1.
  • Distribution: Monkeypox lesions often begin on the face and extremities, including palms and soles, and spread centrifugally, whereas chickenpox rash typically starts on the trunk and spreads outward, rarely affecting palms and soles.
  • Symptoms: Monkeypox lesions are generally more painful, while chickenpox tends to be intensely itchy.
  • Preceding symptoms: Monkeypox is usually preceded by pronounced lymph node swelling, fever, and muscle aches for 1-4 days before the rash appears, whereas in chickenpox, the rash is often the first symptom. It is essential to note that while the study 1 focuses on varicella (chickenpox), the distinctions between monkeypox and chickenpox rashes are based on the most recent and highest quality studies available, which prioritize morbidity, mortality, and quality of life as outcomes. The clinical presentation of monkeypox, including its rash, is critical for diagnosis and management, and healthcare professionals should be aware of these differences to provide appropriate care and prevent further transmission.

From the Research

Monkeypox Rash vs Chickenpox

  • The monkeypox rash can be distinguished from chickenpox based on the occurrence pattern of its skin rash 2.
  • In chickenpox, lesions can be identified in various stages, including macular, papular, vesicular, pustular, and crusts, concurrently 2.
  • In contrast, monkeypox lesions are all in the same stage and evolve at the same rate 2.
  • The clinical diagnosis of monkeypox infection is commonly made based on the occurrence pattern of its skin rash 2.
  • Other conditions, such as molluscum contagiosum, syphilis, varicella zoster, measles, rickettsialpox, and scabies, can present with rashes that may resemble singular or multiple states of the monkeypox rash progression 3.

Key Differences

  • Monkeypox lesions progress through different stages, including macules, papules, vesicles, and pustules 4.
  • The rash in monkeypox is typically more localized and may appear in the genital or anal area 5.
  • Chickenpox, on the other hand, is characterized by a more widespread rash that can appear anywhere on the body 2.

Diagnostic Considerations

  • Diagnostic tests can be extremely useful in differentiating between monkeypox, chickenpox, and other rash-causing disorders 2.
  • Understanding the disease progression and distinct clinical presentation of monkeypox in its various stages may allow for a more expedient diagnosis among healthcare providers 3.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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