ITP Awareness Month

United States, Canada, United Kingdom, Australia, New Zealand, Ireland

About

ITP Awareness Month is observed throughout September to raise understanding of immune thrombocytopenia (ITP), a rare autoimmune bleeding disorder in which the immune system mistakenly attacks platelets, the blood cells that help with clotting. With fewer platelets available, people with ITP may experience easy bruising, prolonged bleeding, nosebleeds, or tiny red or purple spots on the skin. Symptoms and experiences can vary widely, and the condition may affect both children and adults.

Throughout the month, communities, healthcare professionals, patients, and families come together to share reliable information, encourage compassionate support, and highlight the importance of recognizing symptoms and seeking medical guidance. ITP Awareness Month also offers an opportunity to celebrate the resilience of those living with ITP and to remind everyone that greater awareness can help reduce misunderstanding and strengthen support for people navigating this condition.

History

ITP Awareness Month is observed throughout September to increase public understanding of immune thrombocytopenia (ITP), a rare autoimmune bleeding disorder. In people with ITP, the immune system mistakenly targets platelets—blood cells that help control bleeding—causing platelet levels to fall. The condition was once commonly called idiopathic thrombocytopenic purpura; as medical knowledge developed, “immune thrombocytopenia” became preferred because it better describes the disease and recognizes that its cause is not always unknown.

The observance emerged from the work of patients, families, clinicians, and organizations devoted to platelet disorders. Advocacy groups such as the Platelet Disorder Support Association have played an important role in promoting September as a period for education, support, and visibility. Their efforts reflect a broader history of rare-disease advocacy, in which communities have used designated observances to encourage earlier recognition, improve communication between patients and health professionals, and draw attention to conditions that may receive less public awareness than more common illnesses.

Over time, ITP Awareness Month has expanded beyond basic explanations of low platelet counts. Educational campaigns commonly address the varied ways ITP can appear, including bruising, petechiae, nosebleeds, heavy menstrual bleeding, or, in some cases, no obvious symptoms. They also emphasize that ITP can affect children and adults, may be short-term or persistent, and often requires individualized medical management. By sharing patient experiences and information about diagnosis and treatment, the observance has helped challenge misconceptions and highlight the uncertainty that can accompany living with a chronic or fluctuating condition.

The cultural significance of ITP Awareness Month lies in making an uncommon and often invisible illness more recognizable. September provides an extended period for hospitals, advocacy organizations, support networks, and individuals to share educational materials, promote empathy, and encourage people to seek medical advice about unusual bleeding or bruising. It also honors the role of patients and caregivers in advancing awareness, research, and community support, while reinforcing the importance of informed conversations about rare autoimmune disorders.

Timeline

1735
German physician Paul Gottlieb Werlhof published an early clinical description of the bleeding disorder later associated with immune thrombocytopenia, calling it morbus maculosus haemorrhagicus.
1916
Paul Kaznelson reported successful treatment of a patient with thrombocytopenic purpura by splenectomy, helping establish splenectomy as a major treatment approach for ITP.
1951
William J. Harrington and colleagues demonstrated that plasma from people with ITP could cause thrombocytopenia in healthy recipients, providing key evidence for a circulating immune factor that destroys platelets.

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