Contact allergy to IPPD and diphenylthiourea in an orthopaedic brace

Contact allergy in Indonesian patients with foot eczema attributed to shoes

“…Diphenylthiourea, another sensitizer, is present in various synthetic rubber and plastic products due to its use as a stabilizer in the manufacture of PVC and as an accelerator in the production of neoprene . Allergic contact dermatitis caused by diphenylthiourea was found in patients allergic to orthopaedic braces and suits made from neoprene, but almost never to neoprene shoes . Liipo et al .…”

“…34 Allergic contact dermatitis caused by diphenylthiourea was found in patients allergic to orthopaedic braces and suits made from neoprene, but almost never to neoprene shoes. [35][36][37][38] Liipo et al 39 studied sensitization to thiourea derivatives among patients suspected with contact dermatitis, five showed sensitization to diphenylthiourea; one had foot dermatitis and was also sensitized to diaminodiphenylmethane. Friis et al 40 noted contact allergy to neoprene shoes, but reported positive patch test reactions to diethylthiourea instead of to diphenylthiourea.…”

Allergic contact dermatitis from diethylthiourea and carbamates in neoprene prayer socks with severe flare‐up during patch testing

“…1,6 ACD from other sensitizing neoprene additives has also been reported such as colophonium, p-tert-butylphenol formaldehyde resin, zinc diethyldithiocarbamate, nickel, and N-isopropyl-N 0 -phenylp-phenylenediamine. [7][8][9] Zinc diethyldithiocarbamate and 1,3-diphenylguanidine were other possible neoprene allergens 10,11 detected in our patient; however, the exact components of the patient's own socks could not be identified.…”

Palmar dermatitis due to a rubber escalator railing

“…IPPD has been identified as a contact allergen in many different products made of black rubber, with tires probably representing the major reported relevant exposure (2, 3). Other reported exposures include orthopaedic braces and bandages, scuba equipment, boots and shoes, and eyelash curlers (4–8).…”