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Ecthyma in Infant/Neonate
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Ecthyma in Infant/Neonate

Contributors: Craig N. Burkhart MD, Dean Morrell MD, Susan Burgin MD, Noah Craft MD, PhD, Lindy P. Fox MD
Other Resources UpToDate PubMed


Ecthyma is a bacterial skin infection caused by beta-hemolytic streptococci and often secondarily contaminated with staphylococci. It is seen from infancy to the teenage years. This infection is predisposed by poor hygiene, malnutrition, and trauma to the tissues. The lower extremities are sites of predilection.


L08.0 – Pyoderma

762694009 – Ecthyma

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • The disorder is similar to streptococcal Nonbullous impetigo but is differentiated by deeper components.
  • Ecthyma should be differentiated from Ecthyma gangrenosum, which is caused by Pseudomonas sepsis and is potentially life threatening and evolves over hours to days.
  • CA-MRSA skin infection
  • Pyoderma gangrenosum
  • Mycobacterium marinum infection infection
  • Cutaneous leishmaniasis
  • Arthropod bite or sting
  • Sporotrichosis
  • Yaws
  • Haemophilus ducreyi cutaneous ulcers (see Chancroid)
  • Lymphomatoid papulosis

Best Tests

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Management Pearls

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Last Reviewed:08/21/2019
Last Updated:07/18/2023
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Ecthyma in Infant/Neonate
A medical illustration showing key findings of Ecthyma : Buttocks, Crust, Skin ulcer, Lower legs, Thighs
Clinical image of Ecthyma - imageId=52771. Click to open in gallery.  caption: 'A close-up of a large eroded, ulcerated, and crusted plaque.'
A close-up of a large eroded, ulcerated, and crusted plaque.
Copyright © 2024 VisualDx®. All rights reserved.