The signs and symptoms of<unk>  may at first be subtle and nonspecific. Many people experience an influenza-like or diarrheal illness before developing<unk> . Neurological symptoms are very common and vary greatly in severity. Frequently reported symptoms include feeling very tired, confusion, and headaches. Seizures and symptoms similar to those of a stroke can also be seen. Other symptoms include, but are not limited to jaundice or paleness of the skin, a fast heart rate or shortness of breath, or pinpoint-sized purple or reddish dots on the skin known as petechiae. As<unk>  progresses, blood clots form within small blood vessels (microvasculature), and platelets (clotting cells) are consumed. As a result, bruising, and rarely bleeding can occur. The bruising often takes the form of purpura, while the most common site of bleeding, if it occurs, is from the nose or gums. Larger bruises (ecchymoses) may also develop. The classic presentation of<unk> , which occurs in less than 10% of people, includes five medical signs. These are: * Fever * Changes in mental status *<unk>  * Reduced kidney function * Hemolytic anemia (microangiopathic hemolytic anemia). High blood pressure (hypertension) may be found on examination.
Thrombotic thrombocytopenic purpura
Atypical hemolytic uremic syndrome
Drug-induced thrombocytopenic purpura
Hemolytic–uremic syndrome
Immune thrombocytopenic purpura
Disseminated intravascular coagulation
Heparin-induced thrombocytopenia
Gray platelet syndrome