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vesicular lesion; blister

Lesions < 1 cm in diameter containing clear fluid Differential diagnosis: 1) acute dermatitis a) spongiotic vesicles (edema between epidermal cells) b) allergic contact dermatitis c) stasis dermatitis d) irritant dermatitis 2) Herpes (chickenpox, HSV) 3) immunobullous disease 4) cutaneous emboli 5) friction blister (isolated lesions)

Related

bulla; bleb vesiculobullous dermatitis

Specific

friction blister

General

skin lesion

References

  1. Medical Knowledge Self Assessment Program (MKSAP) 11, 15, 18. American College of Physicians, Philadelphia 1998, 2009, 2018.
  2. Harrison's Principles of Internal Medicine, 14th ed. Fauci et al (eds), McGraw-Hill Inc. NY, 1998, pg 320