D. Jenkins , E. Chow
Para-phenylenediamine (PPD) is a chemical used primarily
as a dye and antioxidant in various industrial and consumer
products . Its inclusion on the standard patch test panel
reﬂ ects PPDs ’ standing as one of the most common compounds
to cause allergic sensitisation in western countries .
Patients that are allergic to PPD typically need to make
signiﬁ cant changes in their career or lifestyle, particularly
if they are hairdressers, or wish to dye their hair. Medical
advice to this cohort of patients is usually one-dimensional,
and affected patients are often unhappy and non-compliant
with their dermatologists ’ suggestions.
We examine our patient population from 2006–2012, and
present their history, the mechanisms of sensitisation, and
implications of PPD allergy. A review of the various dyes
used in permanent, PPD-free and semipermanent hair dyes
is undertaken and the safety of non-PPD hair dyes in PPD
allergic individuals is discussed.
A non-interventional-prospective-12-month study to characterise REAL-life effectiveness and treatmentpatterns of secukinumab, and current standard-of-care of chronic plaque psoriasis in Asia-Pacific & MiddleEast