Estrogen dips can trigger migraines—especially in perimenopause. Here’s how to spot it and what helps. Dr. Valerie Davidson and Dr. Robert Maki explain why sudden drops in estradiol can spark headaches/migraines in cycling women, perimenopause, and menopause, plus what to do if HRT dosing (patch vs BiEst vs rhythmic) is making things worse. They also cover DIM (diindolylmethane)—when it helps vs when it can exacerbate low-estrogen symptoms, and supportive options like magnesium glycinate, B-complex, Vitamin D, and blood sugar balance. What you’ll learn ● How luteal-phase and ovulation-time estrogen drops trigger migraines ● Why perimenopause creates spike-and-crash estradiol patterns (and