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Hailey Bieber felt alone battling premenstrual dysphoric disorder (PMDD) after giving birth to her son, Jack Blues.

The Rhode founder, 29, spoke about her diagnosis in a recent interview with Women’s Wear Daily . According to the Mayo Clinic , PMDD is a severe extension of premenstrual syndrome (PMS) that causes extreme mood swings.

Behavioral symptoms can include sadness or hopelessness, anxiety, extreme moodiness, irritability and anger.

“After I had my son, I struggled with [PMDD] a bit, and there’s just not a lot of conversation or research around it,” Bieber said.

The model said talking about her struggles has helped her.

Hailey Bieber (seen here last month) spoke out about her “lonely journey” with premenstrual dysphoric disorder (PMDD) in an interview with Women’s Wear Daily. hailey bieber/ instagram

The Rhode founder was diagnosed after giving birth to her son, Jack Blues. They’re seen here in April 2025.…