13/10/2026
Did you know there are three subtypes of PMDD? Most people don’t.
Group 1 (65%): symptoms show up about a week before your period and ease as soon as it starts. This pattern is often mistaken for PMS.
Group 2 (17.5%): symptoms start up to two weeks before your period and ease as it starts. This is the textbook pattern, and the easiest to get diagnosed.
Group 3 (17.5%): symptoms can start any time in the two weeks before your period and carry on for a few days into it. Because of that delay, many doctors don’t link it to your cycle.
If you’ve ever felt your experience didn’t fit the description, you’re not alone. Our CEO, neuroscientist Dr. Emilė Radytė .em.neuroscientist , explains why each subtype matters for how you manage PMDD.
Download the Samphire app for free and find out which protocol fits your cycle. Link in bio.