Sport Purple for Platelets Day
United States
About
Sport Purple for Platelets Day, observed on September 26, raises awareness of immune thrombocytopenia (ITP), a rare autoimmune disorder in which the immune system mistakenly attacks platelets—cells that help blood clot. With too few platelets, people living with ITP may experience easy bruising, prolonged bleeding, or tiny red spots on the skin.
The day encourages people to wear purple, learn more about ITP, and show support for patients, families, caregivers, and medical teams. By starting conversations and sharing reliable information, Sport Purple for Platelets Day helps build understanding around a condition that may not always be visible and reminds those affected that they are not alone.
History
Sport Purple for Platelets Day is observed annually on **September 26** to raise awareness of platelet disorders, particularly immune thrombocytopenia (ITP). The observance is associated with the Platelet Disorder Support Association (PDSA), an organization that provides education, advocacy, and support for people affected by ITP and related conditions. Its central message is that a seemingly ordinary activity—wearing purple—can help draw attention to disorders that are often unfamiliar to the wider public.
The day’s name combines two ideas: “sporting” purple clothing or accessories and highlighting the importance of platelets. Platelets are blood components that help control bleeding, while people with ITP may have abnormally low platelet counts because the immune system mistakenly attacks them. Because symptoms can be subtle or vary considerably, public awareness has long been an important part of helping patients, families, and communities understand the condition. September 26 therefore serves as a recurring opportunity to discuss diagnosis, treatment, and the everyday experiences of those living with platelet disorders.
Over time, Sport Purple for Platelets Day has developed from a simple awareness initiative into a participatory campaign. Supporters may wear purple, share educational messages, organize fundraising activities, or use social media to explain why platelet health matters. These activities allow patients and families to connect with one another while also giving supporters a visible way to express solidarity. The use of purple provides the campaign with a recognizable visual identity and makes awareness efforts accessible to schools, workplaces, community groups, and online audiences.
Culturally, the observance reflects a broader movement toward patient-led health advocacy. It helps bring attention to a rare and sometimes misunderstood group of conditions without reducing individuals to their diagnoses. By returning each year on **September 26**, Sport Purple for Platelets Day encourages conversation about invisible illness, the need for informed medical care, and the value of support networks for people affected by platelet disorders.