Thrombocytopenia is the alteration of the number of platelets. Platelets are a component of blood that helps the clotting process. This condition shows a decrease in platelets causing abnormal bleeding. The main symptoms are bleeding in the mouth and gums, bruising, nose bleeding, rash or other symptoms depending on the cause. It is possible that in some cases the patient does not have any symptoms. Its causes can be triggered by three reasons: insufficient production in the bone marrow, increased decomposition in the bloodstream, as well as in the spleen or liver and, finally, by other causes such as drug intake. The ideal treatment will depend on the cause of thrombocytopenia, although to prevent or stop bleeding, a platelet transfusion is most advisable. Certain medications such as aspirin or non-steroidal anti-inflammatory drugs or sports that can lead to trauma are recommended.