Systemic contact dermatitis

Area of Science:

• Dermatology
• Allergology
• Immunology

Background:

• Systemic contact dermatitis (SCD) is an inflammatory skin disease.
• It occurs in individuals with contact allergies upon exposure to haptens via various routes (oral, transcutaneous, rectal, intravesical, intravenous, inhalation).
• Common causes include drugs, metals (nickel, cobalt, gold, chromate), and aromatic substances (spices).

Purpose of the Study:

• To summarize the causes, diagnosis, and management of systemic contact dermatitis.
• To highlight treatment strategies including hapten avoidance, dietary modifications, chelation therapy, and hyposensitization.

Main Methods:

• Review of existing literature on systemic contact dermatitis.
• Analysis of common haptens and their routes of exposure.
• Evaluation of therapeutic interventions for SCD.

Main Results:

• Haptens can trigger SCD through multiple exposure routes.
• Drugs and ubiquitous environmental allergens like metals and spices are frequent culprits.
• Effective management relies on identifying and avoiding the causative hapten.

Conclusions:

• Systemic contact dermatitis necessitates careful identification of the offending hapten.
• Treatment options range from avoidance to specific therapies like diet modification, chelation, and hyposensitization.
• Further research into hyposensitization may offer new therapeutic avenues for SCD.