What is the pathophysiology of vesicular palmoplantar eczema?

Updated: Aug 23, 2019
  • Author: Jessica Dunkley, MD, MHSc, CCFP; Chief Editor: Dirk M Elston, MD  more...
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Answer

Vesicular palmoplantar eczema is often thought to have an unidentified intrinsic cause. Although many etiologic factors are described, the underlying pathology of vesicular palmoplantar eczema is unknown. One study examined the roles of aquaporin 3 and aquaporin 10, which are water/glycerol channel proteins located in the epidermis, and concluded that overexpression of these channels may play a role. [3]

Similarly, although certain triggers have been associated with the development or worsening of symptoms such as atopy, contact allergy, and psychological stress, how these triggers cause flares has not been elucidated. [2]

Vesicular palmoplantar eczema results in histologic evidence of dermatitis, such as spongiosis, which is often accompanied by lymphocytic infiltrates.


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