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Browse Search Dictionary Quizzes One Good Fact Subscribe Login contact dermatitis Table of Contents contact dermatitis * Introduction Fast Facts * Related Content Media * Videos * Images More * More Articles On This Topic * Contributors * Article History Home Health & Medicine Conditions & Diseases Skin Diseases CONTACT DERMATITIS dermatology Actions Cite Share Give Feedback External Websites Print Cite Share Feedback External Websites By The Editors of Encyclopaedia Britannica • Edit History -------------------------------------------------------------------------------- Table of Contents contact dermatitis See all media Related Topics: skin disease dermatitis diaper rash ...(Show more) See all related content → contact dermatitis, localized redness and swelling of the skin, together with the formation of vesicles (blisters) in more severe cases, caused by skin contact with irritating chemical substances. Certain chemicals, such as lime or nitric acid, produce inflammation in all persons on first contact. Other agents, ordinarily innocuous (e.g., cosmetics, soaps, clothing), cause inflammation after susceptible persons acquire sensitivity by repeated exposure. Prevention of contact dermatitis rests upon the identification of the particular irritant and its subsequent avoidance. This article was most recently revised and updated by Amy Tikkanen. erysipelas Table of Contents erysipelas * Introduction Fast Facts * Related Content Media * Images More * More Articles On This Topic * Contributors * Article History Home Health & Medicine Conditions & Diseases Infectious Diseases ERYSIPELAS infection Actions Cite Share Give Feedback External Websites Print Cite Share Feedback External Websites By The Editors of Encyclopaedia Britannica • Edit History -------------------------------------------------------------------------------- Table of Contents erysipelas See all media Related Topics: skin disease bacterial disease ...(Show more) See all related content → erysipelas, contagious infection of the skin and underlying tissue, caused by group A B-hemolytic streptococcus bacteria. Erysipelas causes affected areas of skin to turn bright red and become slightly swollen. The swollen blotches have a distinct border and slowly expand into the surrounding skin. The lesions are most commonly seen on the face, scalp, hands, and legs. They feel hot to the touch and the patient is feverish. Centuries ago erysipelas epidemics caused severe and often fatal infections. In ad 1089 one of the most severe epidemics was known as St. Anthony’s fire because those who prayed to St. Anthony were said to recover; others, who did not, died. Today erysipelas is a rather mild and relatively rare infection that clears up rapidly when penicillin or other antibiotics are taken. Even without treatment the infection usually disappears in several weeks, but treatment is necessary to ensure against such potential complications as nephritis, subcutaneous abscesses, and blood poisoning (septicemia) from bacterial toxins. Antibiotic treatment also ensures against a recurrence of the infection and its transmission to others. Britannica Quiz 44 Questions from Britannica’s Most Popular Health and Medicine Quizzes How much do you know about human anatomy? How about medical conditions? The brain? You’ll need to know a lot to answer 44 of the hardest questions from Britannica’s most popular quizzes about health and medicine. This article was most recently revised and updated by Amy Tikkanen. Ask us a question Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article. Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article. Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Britannica, The Editors of Encyclopaedia. "contact dermatitis". Encyclopedia Britannica, 12 Sep. 2014, https://www.britannica.com/science/contact-dermatitis. Accessed 22 May 2022. Copy Citation Share Share to social media Facebook Twitter URL https://www.britannica.com/science/contact-dermatitis Share Share to social media Facebook Twitter URL https://www.britannica.com/science/contact-dermatitis External Websites * eMedicineHealth - Contact Dermatitis verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Britannica, The Editors of Encyclopaedia. "contact dermatitis". Encyclopedia Britannica, 12 Sep. 2014, https://www.britannica.com/science/contact-dermatitis. Accessed 22 May 2022. Copy Citation External Websites * eMedicineHealth - Contact Dermatitis Update Privacy Preferences Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article. Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article. Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Britannica, The Editors of Encyclopaedia. "erysipelas". Encyclopedia Britannica, 29 Dec. 2017, https://www.britannica.com/science/erysipelas. Accessed 22 May 2022. Copy Citation Share Share to social media Facebook Twitter URL https://www.britannica.com/science/erysipelas Share Share to social media Facebook Twitter URL https://www.britannica.com/science/erysipelas External Websites * Indianetzone - Erysipelas or Visarpa * Merck Manuals - Professinal Version - Erysipelas verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Britannica, The Editors of Encyclopaedia. "erysipelas". Encyclopedia Britannica, 29 Dec. 2017, https://www.britannica.com/science/erysipelas. Accessed 22 May 2022. Copy Citation External Websites * Indianetzone - Erysipelas or Visarpa * Merck Manuals - Professinal Version - Erysipelas