Nonthrombocytopenic purpura is a rarely used medical term that refers to a group of disorders that cause the appearance of purple-colored spots on the skin. These spots are caused by bleeding under the skin and can be caused by a variety of underlying medical conditions. Synonyms for nonthrombocytopenic purpura include purpura simplex, ecchymosis, senile purpura, and vascular purpura. These synonyms help to describe the appearance of the skin condition and the potential cause of the bleeding. Treatment for nonthrombocytopenic purpura depends on the underlying cause and may include medication or lifestyle changes to manage the medical condition.