Immune thrombocytopenia (ITP).
A low platelet count caused by the immune system — often very manageable once assessed.
What is ITP?
Immune thrombocytopenia (ITP) is a condition in which the immune system reduces the number of platelets in the blood. Platelets are the small cells that help blood to clot, so when levels fall low enough, bruising and bleeding become more likely.
In many people there is no obvious trigger; sometimes it follows a viral infection. ITP can be short-lived (particularly in children) or more persistent in adults, but even long-standing ITP can usually be managed well.
How it can present
Some people have no symptoms and ITP is found on a routine blood test. When symptoms occur they can include:
- Easy or unexplained bruising
- Petechiae — pinpoint red or purple spots, often on the lower legs
- Nosebleeds or bleeding gums
- Heavier menstrual periods
- Rarely, more significant bleeding
How it's diagnosed
ITP is largely a diagnosis of exclusion — meaning other causes of a low platelet count are ruled out first. Assessment usually includes a full blood examination, a blood film reviewed by a haematologist, and tests to exclude other causes.
How it's treated
Not everyone with ITP needs treatment. If the platelet count is adequate and there is no bleeding, careful monitoring may be all that is required. When treatment is needed, options are chosen to suit the individual and can include:
- Corticosteroids, usually as first-line treatment
- Intravenous immunoglobulin (IVIg) for a rapid, temporary rise in platelets
- Second-line options such as thrombopoietin receptor agonists, rituximab, or occasionally splenectomy
The right approach depends on your platelet count, bleeding risk and personal circumstances, and is something we work through together.
When to see a haematologist
Frequently asked
Ask your GP for a referral, or contact our rooms to arrange assessment in Footscray.
This page provides general information only and is not a substitute for individual medical advice. It should not be used to diagnose or treat a health problem. Please speak with your GP or haematologist about your own circumstances. Last reviewed August 2026.