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Papular urticaria in Infant/Neonate
Other Resources UpToDate PubMed

Papular urticaria in Infant/Neonate

Contributors: Craig N. Burkhart MD, Dean Morrell MD, Lowell A. Goldsmith MD, MPH
Other Resources UpToDate PubMed

Synopsis

Papular urticaria is a chronic or recurrent pruritic eruption believed to be an allergic (hypersensitivity) reaction to insect bites. It is very common in children, especially in the spring and summer in temperate climates and year round where the weather is warm. It can occur anywhere on the body but tends to occur on the exposed extensor surfaces of the extremities. A history of exposure to fleas, mosquitoes, chiggers, mites, bedbugs, or other small insects should be searched for.

The lesions are firm, pink, raised, 2- to 8-mm papules, often with a visible central punctum. They may become excoriated or secondarily infected. They can last weeks to months and often recur at the same time each year. Often, only one person in the household is affected and caregivers are disbelieving of proposed cause. After resolution of the papule, pigmented (postinflammatory) macules may persist.

Codes

ICD10CM:
L50.8 – Other urticaria

SNOMEDCT:
55608001 – Papular urticaria

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • Arthropod bite or sting
  • Bullous impetigo
  • Allergic contact dermatitis
  • Exanthematous drug eruption
  • Gianotti-Crosti syndrome (papular acrodermatitis of childhood)
  • Papulovesicular Polymorphous light eruption
  • Linear IgA bullous dermatosis of childhood
  • Pityriasis lichenoides et varioliformis acuta (PLEVA)
  • Autoeczematization
  • Dermatitis herpetiformis
  • Pityriasis lichenoides chronica

Best Tests

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Management Pearls

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Therapy

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References

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Last Updated:07/19/2021
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Patient Information for Papular urticaria in Infant/Neonate
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Papular urticaria in Infant/Neonate
A medical illustration showing key findings of Papular urticaria : Erythema, Extensor distribution, Leg, Scattered few, Scattered many, Pruritus, Smooth papules, Insect bite
Clinical image of Papular urticaria - imageId=2040355. Click to open in gallery.  caption: 'Edematous, erythematous papules and plaques on the arm.'
Edematous, erythematous papules and plaques on the arm.
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