Related Experiment Video
Updated: Feb 14, 2026

Minimal Erythema Dose MED Testing
Published on: May 28, 2013
Complete resolution of erythema elevatum diutinum using oral sulfasalazine
Michael L Chen1, Agata Chlopik, Maija P Hoang
1Harvard University, Cambridge, Massachusetts, Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts. michael_ chen@college.harvard.edu.
Abstract:
Erythema elevatum diutinum (EED) is a rare, chronic small-vessel vasculitis that presents as firm, red, violaceous, or brown papules and nodules on the extensor surfaces of the limbs. Oral dapsone is considered first-line therapy for EED; in the current case report, a patient presenting with EED began dapsone treatment and symptoms subsided within two weeks. Seven months later, the patient became pregnant and stopped dapsone owing to her concerns with dapsone use during pregnancy, resulting in recurrence of EED symptoms. We present a novel treatment approach with oral sulfasalazine, which was given to the patient in lieu of dapsone and resulted in complete resolution of EED symptoms.
Related Concept Videos
Oral Cavity
Teeth: The teeth are the hardest structures in our bodies. Humans have two sets of teeth throughout their lifetime: deciduous (baby) teeth and permanent teeth. Each tooth consists of several parts: the crown (visible part), the root (embedded in the jaw), enamel (hard outer...
Oral Hypoglycemic Agents: Glinides
Psychosexual Stages of Personality: Oral
Weaning, typically occurring...
Oral Hypoglycemic Agents: Sulfonylureas
Assessing Body Temperature - Oral
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
Chromatographic Resolution
The effectiveness of separation can be evaluated by determining the level of separation between two neighboring peaks in a chromatogram, which represents the individual components of a sample.
In chromatography,...

