BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuBullaeBullae 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.BlistersA vesicle is a small fluid-filled blister on the skin.ImageRead Article Now Book Mark Article Open ReferencesReferencesDinulos JGH. Principles of diagnosis and anatomy. In: Dinulos JGH, ed. Habif's Clinical Dermatology: A Color Guide in Diagnosis and Therapy. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 1.Dinulos JGH. Vesicular and bullous diseases. In: Dinulos JGH, ed. Habif's Clinical Dermatology: A Color Guide in Diagnosis and Therapy. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 16.AllVideoImagesTogBullous pemphigoid - close-up of tense blisters - illustration Pemphigus is classified as one of the blistering diseases. These is a close-up picture of typical lesions. Very small blisters are called vesicles. Larger blisters, like these, are called bullae.Bullous pemphigoid - close-up of tense blistersillustrationPoison 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. The person may then spread the toxin to other areas of the body by scratching.Poison ivy on the kneeillustrationPoison 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 legillustrationBullous pemphigoid - close-up of tense blisters - illustration Pemphigus is classified as one of the blistering diseases. These is a close-up picture of typical lesions. Very small blisters are called vesicles. Larger blisters, like these, are called bullae.Bullous pemphigoid - close-up of tense blistersillustrationPoison 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. The person may then spread the toxin to other areas of the body by scratching.Poison ivy on the kneeillustrationPoison 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 legillustrationRelated Information Vesicles(Symptoms) Review Date: 10/20/2022 Reviewed By: Linda J. Vorvick, MD, Clinical Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited. © 1997- All rights reserved. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.Content is best viewed in IE9 or above, Firefox and Google Chrome browser.
BullaeBullae 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.BlistersA vesicle is a small fluid-filled blister on the skin.ImageRead Article Now Book Mark Article Open ReferencesReferencesDinulos JGH. Principles of diagnosis and anatomy. In: Dinulos JGH, ed. Habif's Clinical Dermatology: A Color Guide in Diagnosis and Therapy. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 1.Dinulos JGH. Vesicular and bullous diseases. In: Dinulos JGH, ed. Habif's Clinical Dermatology: A Color Guide in Diagnosis and Therapy. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 16.