Anyone even a little bit familiar with Harry Potter lore might recall that the boy wizard would experience intense, intermittent head pain — centered around a lightning bolt–shaped scar on his forehead — whenever his nemesis was near. For years, headache specialists have debated what type of headache this might be and finally landed on a diagnosis of nummular headache. This week’s featured article will have you feeling less like a Muggle on the topic, as it tells all you need to know about this very rare headache type. Plus:

Wishing you a spell of relief,