Main Campus: Chesterfield, MO 63017 | 
Bullae
Bullae are large blisters on the skin that are filled with clear fluid. Many different skin conditions can cause bullae to form. They can be caused by infection or inflammation of the skin.
Blisters
A vesicle is a small fluid-filled blister on the skin.
References
Habif TP. Principles of diagnosis and anatomy. In: Habif TP, ed. Clinical Dermatology . 6th ed. Philadelphia, PA: Elsevier; 2016:chap 1.
Habif TP. Vesicular and bullous diseases. In: Habif TP, ed. Clinical Dermatology . 6th ed. Philadelphia, PA: Elsevier; 2016:chap 16.
-
Bullous pemphigoid, close-up of tense blisters - illustration
Bullous pemphigoid is a blistering skin condition that most often affects the elderly. This is a close-up picture of the typical blisters. Large blisters, like these, are called bullae.
Bullous pemphigoid, close-up of tense blisters
illustration
-
Poison ivy on the knee - illustration
This is a typical early appearance of a poison ivy rash, located on the knee. These early lesions consist of multiple small blisters (vesicles), often in a line where the skin has brushed against the poison ivy plant.
Poison ivy on the knee
illustration
-
Poison ivy on the leg - illustration
This is a typical early appearance of a poison ivy rash, located on the leg. These early lesions consist of multiple small blisters, often in a line where the skin has brushed against the poison ivy plant. The rash is caused by skin contact with the oily sap (resin) of these plants. The oily resin usually enters the skin rapidly, and is seldom transferred from person to person. The rash is not caused by the fluid from the blisters. Thus, once the person has washed the oil off the skin, the rash is usually not contagious.
Poison ivy on the leg
illustration
-
Bullous pemphigoid, close-up of tense blisters - illustration
Bullous pemphigoid is a blistering skin condition that most often affects the elderly. This is a close-up picture of the typical blisters. Large blisters, like these, are called bullae.
Bullous pemphigoid, close-up of tense blisters
illustration
-
Poison ivy on the knee - illustration
This is a typical early appearance of a poison ivy rash, located on the knee. These early lesions consist of multiple small blisters (vesicles), often in a line where the skin has brushed against the poison ivy plant.
Poison ivy on the knee
illustration
-
Poison ivy on the leg - illustration
This is a typical early appearance of a poison ivy rash, located on the leg. These early lesions consist of multiple small blisters, often in a line where the skin has brushed against the poison ivy plant. The rash is caused by skin contact with the oily sap (resin) of these plants. The oily resin usually enters the skin rapidly, and is seldom transferred from person to person. The rash is not caused by the fluid from the blisters. Thus, once the person has washed the oil off the skin, the rash is usually not contagious.
Poison ivy on the leg
illustration
Review Date: 10/31/2016
Reviewed By: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
