Change in moles linked to use of unlicensed "sun tan jab"

We draw attention to a new factor complicating presentation and diagnosis of pigmented lesions1: unlicensed use of melanotropic peptides offered online as Melanotan I and II. Two patients presented to our dermatology clinic with rapidly changing moles and a conspicuous tan, despite their sun reactive skin type I/II (sunburns easily, suntans poorly). They were both sunbed users. One, a woman of 42, reported two moles on her …