About Idiopathic Thrombocytopenic Purpura (ITP)
Idiopathic thrombocytopenic purpura is a complex blood (hematologic) disorder characterized by low platelet count. The exact root cause of ITP is not fully understood, but several theories have been proposed:
- Autoimmune destruction: ITP is mainly caused by the immune system attacking platelets by mistake. The body’s immune system sees platelets as harmful and makes antibodies that target and destroy them.
- Reduced platelet production: In some cases, ITP also affects how well platelets are made. This happens when the cells in the bone marrow that make platelets, called megakaryocytes, are not working as well as they should.
Non-modifiable risk factors for ITP are factors that cannot be changed or influenced. This includes:
- Age: People older than 60 years are at a higher risk of developing ITP.
Modifiable risk factors (factors that can be changed or influenced) for ITP are not well-understood. However, certain factors may potentially influence the development or course of ITP:
- Infections: Some studies suggest that certain infections, such as Helicobacter pylori (HP) infection, may trigger or make ITP worse in people who are more likely to develop it. However, more research is needed to establish a definitive link.
- Medications: Some medications, such as certain antibiotics and anticonvulsants, have been linked with the development of ITP in rare cases. However, the overall risk is low.
It's important to note that while these factors may be linked with an increased risk of developing ITP, they do not mean it will happen. If you have concerns about your risk for ITP or its cause, it's best to consult with your healthcare professional for personalized advice.
The most common early symptoms of idiopathic thrombocytopenic purpura include:
- Unexplained bruises: Small red bumps on the skin (petechiae) or unexplained bruising (purpura) may appear due to low platelet counts.
- Bleeding from the gums and nose: Frequent bleeding from the gums and nose can occur as a result of impaired blood clotting.
- Fatigue: ITP can cause fatigue, which may be due to decreased platelet levels affecting overall blood function.
As the disease progresses or reaches higher severity, additional symptoms may occur, such as:
- Heavy periods: Unusually heavy menstruation can be a symptom of ITP in women.
- Blood in urine or stool: Internal bleeding can lead to blood appearing in urine or stool.
- Hematomas: Larger areas of bleeding under the skin can form hematomas, which are painful and swollen masses.
It's important to note that while these symptoms are commonly linked with ITP, they can also be part of other conditions. It is recommended to consult with a healthcare professional for an accurate diagnosis and appropriate treatment options.
To diagnose idiopathic thrombocytopenic purpura, health care providers commonly perform the following examinations, tests, and procedures:
- Physical exam: Your health care provider will look for common symptoms of ITP, such as bruising or unusual bleeding.
- Lab tests: Specific lab tests, such as a blood draw, may be recommended to check your platelet count and assess your overall blood cell levels.
- Imaging studies: Depending on your symptoms, imaging studies like ultrasounds may be recommended to check for spleen enlargement or other related issues.
Additional examinations, tests, and procedures may include:
- Clinical procedures: Your health care provider may recommend clinical procedures like bone marrow aspiration (removing a small sample of liquid bone marrow to check blood cells) or biopsy (taking a small solid piece of bone marrow to look at blood cell production) to further evaluate your condition.
- Follow-up exams: Regular follow-up exams can help monitor changes in your platelet count and assess the progression of ITP.
It's important to note that the specific examinations, tests, and procedures may vary depending on individual circumstances. Your health care provider will guide you through the diagnostic process and determine the most appropriate approach for your situation.
The goals of treatment for idiopathic thrombocytopenic purpura are to increase platelet count and reduce the risk of bleeding. Here are the recommended treatments and how they work to achieve these goals:
Medications:
- Corticosteroids: These drugs help suppress the immune system, reducing the destruction of platelets.
- Intravenous immunoglobulin (IVIG): IVIG contains antibodies that can block the destruction of platelets by the immune system.
- Thrombopoietin receptor agonists (TPO-RAs): TPO-RAs stimulate the production of platelets in the bone marrow.
- Rituximab: This medication targets specific immune cells involved in platelet destruction.
Therapeutic procedures:
- Platelet transfusion: In severe cases, transfusing platelets can temporarily raise platelet counts and prevent bleeding.
- Splenectomy: Surgical removal of the spleen can reduce platelet destruction, but it is usually considered when other treatments fail.
Self-care and health behavior changes:
- Avoid activities that may increase the risk of bleeding, such as contact sports
- Avoid certain medications that affect platelet function, such as non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen.
It's important to note that these treatment options should be discussed with a healthcare professional before making any decisions.
Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Side effects can occur. Check with your health care professional or read the information provided with your medication for side effect information.