“…Hair abnormalities are remarkably variable: classically, hair is short, brittle, spiky, sparse and slow-to-grow, but can have a normal appearance. Severe complications include human papillomaviruses infections (Folster-Holst et al, 1999;Weber et al, 2001) and squamous cell carcinoma (Hintner et al, 1980;Saghari et al, 2002;Krasagakis et al, 2003;Hatano et al, 2005;Li et al, 2011;Natsuga et al, 2011;van der Voort and Prens, 2013), which question whether NS predisposes to HPV infections or to epithelial skin cancers.…”