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Trauma bulla in Adult
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Trauma bulla in Adult

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Contributors: Aman Samrao MD, Whitney A. High MD, JD, MEng
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Trauma bullae (ie, friction blisters) are typically large bullae that are caused by physical forces.

They result from chronic pressure or friction on the skin, such as that from wearing tight shoes. They are most common on the palms and soles. They can be skin colored or red / purple from hemorrhage. They are usually painful and have a stinging or burning sensation for 1-2 days after the trauma.


R23.8 – Other skin changes

400145001 – Traumatic blister

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • Epidermolysis bullosa acquisita – Patients usually have a history of blisters at multiple sites with even minimal friction. Histopathology can confirm diagnosis.
  • Epidermolysis bullosa simplex – Patients usually have a history of blisters at multiple sites on the hands and feet. Histopathology can confirm diagnosis.
  • Bullosis diabeticorum – Patients have diabetes mellitus.
  • Stasis bullae (see also stasis dermatitis) – More common symmetrically around the lower legs.
  • Burns – Usually more geometric in shape in the area of thermal exposure.
  • Bullous arthropod bites – Usually scattered and smaller bullae.
  • Bullous fixed drug eruption – Round bullae, usually associated with more inflammation and red-brown plaques underlying the bullae.

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Last Updated: 09/01/2017
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Trauma bulla in Adult
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Trauma bulla : Flaccid bullae, Friction exposure, Painful skin lesions, Palm, Tense bullae, Plantar foot
Clinical image of Trauma bulla
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