Common causes are Vit B12 and folic acid deficiency, leukemias, lymphomas, decreased production of thrombopoietin by liver, Dengue
fever, HIV, hemolytic anemias, etc. Blood
transfusions and plasma exchange are the prescribed treatments. Immunoglobulins are given through veins for a rapid increase in platelets counts. Certain medications are used in Idiopathic thrombocytopenic purpura.
Please discuss with her treating doctor. Take care!