14430 Thrombocytopenia

Overview

Thrombocytopenia (pronounced throm-boh-sy-toh-PEE-nee-uh) means you have a lower-than-normal number of platelets in your blood. Platelets are tiny, colourless blood cells that help your blood stick together to form clots and stop bleeding. Without enough platelets, you may bruise easily or bleed longer than usual.

It is a fairly common blood condition. It can happen on its own or as part of another illness, and it is often seen in people who are in hospital or taking certain medicines.

Anyone can be affected, but it is more likely in older adults, pregnant women, and people with conditions such as infections, autoimmune diseases, or blood disorders.

Symptoms

Common symptoms

• Easy or unusual bruising
• Small red or purple spots on the skin (called petechiae)
• Bleeding that takes longer to stop from cuts
• Bleeding gums or frequent nosebleeds
• Blood in urine or stool
• Heavier than usual menstrual periods

Symptoms in children

• Bruising after very minor bumps
• Nosebleeds or bleeding gums
• Small red dots on the skin, especially on the lower legs
• Unusual tiredness or irritability

Symptoms in older adults

• May have no symptoms at all
• Easy bruising that is slow to fade
• Bleeding from the mouth or gums
• Blood in stool or urine
• Confusion, dizziness, or weakness — these can be signs of internal bleeding

Causes

Main causes

• Your bone marrow does not make enough platelets — this can happen with certain blood disorders, infections, or after some treatments.
• Your body's immune system destroys platelets by mistake — this may happen after a viral infection or with an autoimmune condition.
• Your spleen traps platelets — the spleen is an organ that helps filter blood, and an enlarged spleen can hold on to too many platelets.
• Some prescription medicines can lower platelet levels.
• Pregnancy can cause mild thrombocytopenia, especially in the third trimester.
• Heavy alcohol use or a lack of vitamin B12 or folate can reduce platelet production.

Risk factors

• Pregnancy
• Autoimmune conditions, such as lupus
• Infections caused by viruses
• Some prescription medicines
• Heavy alcohol use
• A family history of blood disorders

When to see a doctor

See a doctor urgently if:

• You have any sign of serious bleeding, such as blood in vomit, urine, or stool.
• You have a sudden severe headache or any stroke-like symptoms.
• You have bleeding that will not stop after 10 minutes of pressure.

Book a routine appointment if:

• You notice easy bruising, tiny red spots on your skin, or you are bleeding more than usual.
• You have frequent nosebleeds or bleeding gums.
• You feel very tired or breathless, or you look pale.

Diagnosis

Thrombocytopenia is usually found by a simple blood test called a complete blood count. This test counts your platelets and other blood cells. Your doctor will also ask about your symptoms, medicines, and family history, and may examine you for bruises, spots, or an enlarged spleen.

Tests that may be done

• A complete blood count (CBC) to measure your platelet level
• A blood smear, where a drop of blood is looked at under a microscope
• Tests for antibodies or signs of infection
• A bone marrow test, if the cause is unclear
• An ultrasound scan to check your spleen and liver

What to expect at your appointment

You may need to repeat the blood test to see if your platelet count is changing. If the cause is not obvious, your doctor may refer you to a haematologist, a specialist in blood conditions. The specialist will do more tests and help plan the right care for you.

Treatment

Treatment for thrombocytopenia depends on what is causing it and how severe it is. If your platelet count is only a little low and you have no symptoms, you may not need any treatment. If treatment is needed, it will focus on managing the cause and preventing bleeding.

Self-care at home

• Avoid contact sports and other activities that could cause bumps or injuries.
• Use a soft toothbrush and floss gently to protect your gums.
• Shave with an electric razor instead of a blade.
• Be careful with knives, scissors, and other sharp objects.
• Ask your doctor or pharmacist before taking any over-the-counter medicines — some can affect platelets.

Medical treatments

Medical treatment may include medicines that help your bone marrow make more platelets, medicines that calm your immune system, or treatment for the underlying infection or condition. If your platelet count is dangerously low, you may need platelet transfusions through a vein. Another possible treatment is a procedure that removes antibodies from your blood. Your healthcare team will explain the options that fit your situation.

When is surgery considered?

Surgery is rarely needed for thrombocytopenia itself. If you need an operation for another reason, your healthcare team will check your platelet count beforehand and take steps to reduce your bleeding risk.

Living with this condition

Living with low platelets means taking simple precautions to avoid injuries and paying attention to any signs of bleeding. Keep a diary of new bruises or bleeding episodes and share it with your doctor. It can also help to tell close family or friends so they know what to watch for.

Lifestyle tips

• Choose activities like walking, swimming, or cycling instead of contact sports.
• Wear protective gear, such as helmets and knee pads, for any active hobbies.
• Use caution in the kitchen and garden with sharp tools.
• Avoid blowing your nose too hard, and stay hydrated to keep your nasal passages moist.

Diet and exercise

There is no special diet to cure thrombocytopenia, but eating a balanced diet with plenty of fruits, vegetables, and foods that contain iron and folate supports your overall health. Moderate exercise is fine, but ask your doctor which activities are safe for your platelet level.

Mental health and emotional wellbeing

Living with the risk of bleeding can cause worry or anxiety. It is normal to feel this way. Talk to your doctor, a counsellor, or a trusted friend. If you ever feel overwhelmed or hopeless, please reach out to a mental health crisis line in your area — they are there to listen and help.

Prevention

Most cases of thrombocytopenia cannot be prevented, especially when they are caused by an underlying condition. However, you can reduce your risk of bleeding by avoiding injuries, limiting alcohol, and keeping up with recommended check-ups.

Vaccines

Some infections that can trigger low platelets are preventable through vaccination. Staying up to date with the vaccines recommended by your local health service can help protect you.

Screening programmes

There is no routine screening test for the general public. Doctors usually check platelet levels when you have symptoms, or if you have a condition that raises your risk.

Complications

If left untreated

• Internal bleeding, such as bleeding in the stomach or intestines
• Bleeding in the brain, which is rare but very serious
• Severe anaemia from blood loss, causing tiredness and weakness

Long-term outlook

With the right care, most people with thrombocytopenia improve or manage the condition well. Mild cases often get better on their own. Even for more serious causes, treatments have advanced a great deal. Your healthcare team will support you every step of the way, and many people with low platelets live full, active lives.

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