Thrombotic thrombocytopenic purpura awareness

Overview

Thrombotic thrombocytopenic purpura, or TTP, is a rare but serious blood disorder. In TTP, small blood clots form throughout the body, using up the platelets that normally help stop bleeding. This can lead to low platelet counts and damage to organs like the brain and kidneys.

No, TTP is very rare. It affects about 3 to 4 people per million each year.

TTP can affect anyone, but it is more common in women and people assigned female at birth, especially between ages 20 and 60. Certain factors like pregnancy, infections, or some medications can trigger it in people who are already at risk.

Symptoms

Common symptoms

• Bruising or small purple spots on the skin (petechiae)
• Feeling very tired or weak
• Fever
• Confusion, headache, or trouble speaking
• Pale or yellow skin (jaundice)
• Shortness of breath or rapid heartbeat

Symptoms in children

• Similar symptoms as adults, but may be mistaken for other illnesses like meningitis
• Irritability, fussiness, or crying more than usual
• Trouble feeding or reduced appetite
• Seizures or unusual movements

Symptoms in older adults

• Confusion or cognitive changes that might be blamed on aging
• Falls or dizziness
• Less obvious bruising, which can delay diagnosis
• Fatigue and weakness that impact daily activities

Causes

Main causes

• Most cases of TTP are caused by a problem with the immune system, where the body makes antibodies that attack its own ADAMTS13 enzyme.
• Rarely, TTP can be inherited due to a genetic mutation that prevents the body from making enough ADAMTS13.

Risk factors

• Being a woman or assigned female at birth
• Pregnancy or postpartum period
• Certain infections (like HIV or some gastrointestinal infections)
• Some medications (e.g., certain chemotherapy drugs, immunosuppressants, or birth control pills)
• Having other autoimmune conditions (like lupus)
• Family history of TTP (for the inherited form)

When to see a doctor

See a doctor urgently if:

• If you have any of the emergency symptoms listed above, call your local emergency number immediately.
• If you notice new bruising or tiny red spots without a clear cause, see a doctor urgently.

Book a routine appointment if:

• If you have had TTP before, you should have regular follow-up appointments with your healthcare team.
• If you have a family history of TTP and are planning a pregnancy, talk to your doctor in advance.

Diagnosis

A doctor will suspect TTP based on your symptoms and blood test results. The key signs are a low platelet count and signs of red blood cell damage (schistocytes on a blood smear). A definitive diagnosis requires measuring the level of ADAMTS13 enzyme activity in your blood – if it is very low (below 10%), TTP is confirmed.

Tests that may be done

• Complete blood count (CBC) to check platelet count and red blood cell levels
• Peripheral blood smear to look for broken red blood cells (schistocytes)
• ADAMTS13 activity test and inhibitor test (to check for antibodies)
• Kidney function tests and liver function tests
• Imaging tests like CT or MRI if neurological symptoms are present

What to expect at your appointment

If TTP is suspected, you will likely be admitted to the hospital immediately. The diagnosis can take a few hours to a day. Blood samples will be sent to a special lab. While waiting, treatment may begin based on strong suspicion. You will also be monitored for complications like stroke, kidney injury, or bleeding.

Treatment

TTP is a medical emergency that requires rapid treatment in a hospital. The main goal is to remove the antibodies that are blocking ADAMTS13 and to replenish the missing enzyme. Treatment is usually started even before the diagnosis is confirmed.

Self-care at home

• Rest and avoid any activities that could cause injury or bleeding.
• Do not take aspirin, ibuprofen, or other blood-thinning medications unless your doctor says it's safe.
• Follow your healthcare team's instructions carefully – TTP treatment is complex and requires close monitoring.

Medical treatments

The most important treatment for TTP is plasma exchange (plasmapheresis), a procedure that filters your blood to remove harmful antibodies and replace them with healthy plasma. This is usually done daily until platelet counts improve. In addition, doctors may use corticosteroids (like prednisone) to suppress the immune system. For some people, other immunosuppressive medications are needed to stop the immune system from attacking the ADAMTS13 enzyme. These treatments are always chosen and monitored by a specialist.

When is surgery considered?

Surgery is not typically used to treat TTP itself. However, in some cases, a procedure called plasma exchange requires placing a central line (a special tube in a large vein), which is done by a doctor. Surgery may be needed to manage complications (e.g., if a clot causes bowel damage), but this is rare.

Living with this condition

After recovering from the initial episode of TTP, you may need to continue medications and have regular check-ups. Many people return to a normal daily routine, but you should be aware of symptoms that could signal a relapse. Fatigue can persist for weeks or months, so pace yourself.

Lifestyle tips

• Stay in close contact with your healthcare team – they will monitor your blood counts and adjust treatments.
• Learn the early signs of a relapse (like bruising, confusion, or jaundice) and know when to seek help.
• Wear a medical alert bracelet or inform those close to you about your condition.
• Avoid smoking and limit alcohol, as these can affect your immune system and blood vessels.

Diet and exercise

A balanced diet that includes plenty of fruits, vegetables, and lean protein can help support your recovery. Avoid raw or undercooked foods that could cause infection if you are on immunosuppressants. Gentle exercise like walking is encouraged once your platelets are stable, but avoid contact sports or activities that could cause bruising. Always ask your doctor before starting any new exercise program.

Mental health and emotional wellbeing

Living with a rare, serious illness can be frightening and stressful. It is normal to feel anxious, depressed, or overwhelmed. Talk to your healthcare provider about your feelings – they can refer you to a counselor or support group. Remember that most people recover and go on to live well.

Prevention

For the acquired form of TTP, there is no known way to prevent the first episode. However, once you have had TTP, you and your doctor can work together to avoid triggers, such as certain medications or infections. The inherited form cannot be prevented, but genetic counseling can help families plan.

Vaccines

There is no vaccine for TTP. However, it is important to stay up-to-date on vaccines (like flu and pneumonia vaccines) to reduce your risk of infections that could trigger a flare.

Screening programmes

There is no routine screening for TTP in the general population. If you have a family history of inherited TTP, genetic testing and counseling may be available through a specialist.

Complications

If left untreated

• Stroke or permanent brain damage
• Kidney failure requiring dialysis
• Severe bleeding from low platelets (for example, in the brain or digestive tract)
• Heart problems such as heart attack or heart failure
• Death – TTP is fatal in up to 90% of cases if not treated promptly

Long-term outlook

With early diagnosis and modern treatment, the outlook for TTP is very good. More than 90% of people survive the initial episode. Most recover fully, though some may have long-term effects like fatigue, memory problems, or kidney issues. Regular follow-up is key to managing your health and spotting any recurrences early. Ongoing research continues to improve treatments and quality of life.

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