Concentration variability of potent allergens of p-tert-butylphenol-formaldehyde resin (PTBP-FR) in patch test preparations and commercially available PTBP-FR

Background p-tert-Butylphenol-formaldehyde resin (PTBP-FR) is a common component of glues used in the manufacturing of many plastic, electronic, rubber, wood and leather products. Two main allergens of PTBP-FR have been described. Objectives To highlight the utility of a frontalis-based island pedicle flap (FIPF) for the single-stage, aesthetic reconstruction of such defects. Methods The design and detailed surgical technique required for a FIPF are described. Results The long-term results are illustrated. Conclusions FIPFs, despite significant tissue dissection, are readily performed under local anaesthesia and are well tolerated by patients. The FIPF adds to the dermatological surgeon's armamentarium in the reconstruction of large defects of the central forehead and frontal scalp.