Dermatology Book

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ChilblainsAka: Pernio

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  1. Pathophysiology
    1. Skin reaction to cold, damp conditions
  2. Symptoms
    1. Onset
      1. Lesions following cold exposure
    2. Location:
      1. Inflammatory lesions of hands and feet
    3. Associated symptoms
      1. Lesions itch, burn or are painful
    4. Course
      1. Develops over hours or days and slowly subsides
  3. Signs
    1. Rash on hands and feet
      1. Multiple erythematous, purplish Papules or Nodules
  4. Lab: Skin biopsy
    1. Blood vessel wall thickening
    2. Perivascular lymphocytic infiltrates
    3. Edema of papillary Dermis
  5. Management
    1. Rest
    2. Warmth
    3. Antipruritics
    4. Analgesics
    5. Nifedipine 20 mg PO tid
  6. Prevention
    1. Adequate clothing and home heating
    2. Short course of UV light at the beginning of winter

Chilblains (C0008058)

Definition (MSH)Recurrent localized itching, swelling and painful erythema on the fingers, toes or ears, produced by exposure to cold. It is also called pernio.
ConceptsInjury or Poisoning (T037)
ICD9991.5, 991.5
MSHD002647
EnglishChilblain, Chilblains, Erythema pernio, Pernio, Perniosis
Spanisheritema pernio, perniosis, sabanones
Parent Conceptsenvironmental temperature-related disorder (C0679357), Effects of low temperature (C0161734), Frostbite (C0016736), Local cold injury (C0340668), Disorder of extremity (C1290877)
SourcesAOD, ICD9CM, LCH, MSH, MTH, MTHICD9, NDFRT, OMIM, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



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