Related Experiment Video
Updated: May 18, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
Long lasting interstitial generalized granuloma annulare on sun-exposed areas
Marta Andreu-Barasoain1, Enrique Gómez de la Fuente, Fernando Pinedo
1Department of Dermatology, Hospital Universitario Fundación Alcorcón, Madrid, Spain. andreu_marta@hotmail.com
Abstract:
Granuloma annulare (GA) is a benign inflammatory dermatosis of unknown etiology and chronic course, with different clinical variants. The cases associated with a photodistributed pattern are rare and show a palisading histopathological pattern. We report a case of generalized GA affecting sun-exposed areas with an interstitial pattern. The patient has been followed-up for 6 years, presenting a recurrent course of the disease, with a good response to chloroquine and relapse when no treatment was prescribed.
More Related Videos
06:35An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis
Published on: February 8, 2019
10:27Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
Published on: December 15, 2011
Related Concept Videos
Chronic Inflammation: Introduction
Hypersensitivity Reactions: Immune-Complex Reactions
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Pigmentation
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
Graves Disease II: Pathophysiology