This day serves as a global beacon of hope for the 300 million people worldwide living with rare diseases. Established in 2008 by EURORDIS (European Organisation for Rare Diseases), Rare Disease Day strategically falls on the last day of February—the "rarest" day of the year, occurring on February 29th during leap years and February 28th otherwise.
The initiative addresses a critical healthcare gap: while individual rare diseases affect fewer than 1 in 2,000 people, collectively they impact one in twenty individuals globally. These conditions, numbering over 7,000 known diseases, often remain undiagnosed for years due to their complexity and the limited research funding they receive.
Communities worldwide mark this day through awareness campaigns, patient advocacy events, and fundraising activities. Landmarks illuminate in rare disease colors, social media campaigns share patient stories, and medical conferences spotlight cutting-edge research. The day's central message—"Share Your Colors"—encourages people to celebrate the diversity within the rare disease community.
Perhaps most remarkably, this grassroots movement has grown to span over 100 countries, proving that even the rarest voices can create the loudest chorus. The day transforms isolation into solidarity, giving patients and families a powerful platform to advocate for better diagnosis, treatment, and research funding.