Normal150,000 to 450,000 platelets per microliter of circulating blood. Because each platelet lives only about 10 days, your body continually renews your platelet supply by producing new platelets in your bone marrow.
Thrombocytopenia can be inherited or it may be caused by a number of medications or conditions.
Thrombocytopenia is due to decreasedproduction or increase destruction.
Decreased production of platelets
Factors that can decrease platelet production include:
1.Leukemia
2.Some types of anemia
3.Viral infections, such as hepatitis C
or HIV
4.
Chemotherapy drugs
5.Heavy alcohol consumption
Increased breakdown of platelets
1.Pregnancy. Thrombocytopenia caused by pregnancy is usually mild and improves soon after childbirth
2.
Immune thrombocytopenia. This type is caused by autoimmune diseases, such as lupus and
rheumatoid arthritis. The body's immune system mistakenly attacks and destroys platelets. If the exact cause of this condition isn't known, it's called idiopathic
thrombocytopenic purpura. This type more often affects children.
3.Bacteria in the blood. Severe bacterial infections involving the blood (bacteremia) may lead to destruction of platelets.
4.Thrombotic thrombocytopenic purpura. This is a rare condition that occurs when small blood clots suddenly form throughout your body, using up large numbers of platelets.
5.
Hemolytic uremic syndrome. This rare disorder causes a sharp drop in platelets, destruction of red blood cells and impairment of kidney function. Sometimes it can occur in association with a bacterial
Escherichia coli (E. coli) infection, such as may be acquired from eating raw or undercooked meat.
6.Medications. Certain medications can reduce the number of platelets in your blood. Sometimes a drug confuses the immune system and causes it to destroy platelets. Examples include heparin, quinine, sulfa-containing antibiotics and anticonvulsants.
Your father suffering from Idiopathic or immune mediated thrombocytopenia(ITP).
Treated with
1. Immunosuppressents
2.
Thrombopoietin receptor agonists — such as romiplostim (Nplate) and eltrombopag (Promacta)
3.IGIV
Some treatment resistant cases spleenectomy also required.