Allergic contact dermatitis to braces containing 4,4′‐diaminodiphenylmethane, a previously unreported causative agent.

Allergic contact dermatitis to braces containing 4,4'-diaminodiphenylmethane, a previously unreported causative agent Keywords: allergic contact dermatitis; brace; case report; diaminodiphenylmethane; orthopedic support EN allergic contact dermatitis brace case report diaminodiphenylmethane orthopedic support 157 159 3 07/27/20 20200801 NES 200801 4,4'-Diaminodiphenylmethane (4,4'-MDA, CAS no. 101-77-9), an aromatic amine, is the degradation product of 4,4'-methylenebis(phenyl isocyanate) (4,4'-MDI). The patient had had a fracture of the fifth right metatarsal bone 20 days prior and had been wearing a leg brace made of polyurethane ever since (Figure 1A). [Extracted from the article]