Guest: Dr. Jon Zippin 

What happens when two longtime friends, dermatologists, and self-proclaimed science nerds get together to talk about pigment? Well, this one time, at band cAMP…. Anyway, in this episode of the JDD Podcast, host Dr. Adam Friedman welcomes back his longtime friend and renowned physician-scientist Dr. Jon Zippin for a conversation that goes well beyond skin deep. Vitiligo has traditionally been framed as an immune system gone rogue, attacking innocent melanocytes. But what if we’ve been so focused on the attackers that we’ve overlooked the victims and their ability to fight back? Enter cyclic AMP (cAMP), phosphodiesterase-4 (PDE4), and an increasingly complex cast of cytokines, oxidative stress pathways, and intracellular signaling networks. Could PDE4 inhibition offer a potential two-for-one biological benefit, dialing down inflammation while simultaneously supporting melanocyte function, survival, and perhaps even repigmentation? From the evolving immunobiology of vitiligo to the promise and pitfalls of targeting melanocyte signaling, these bunk mates explore whether the next chapter in pigmentary therapeutics will require treating both sides of the equation. Along the way, expect some friendly scientific sparring, a little molecular mischief, and the kind of banter that only comes from years of friendship.