How long thrombocytopenia lasts depends on its cause.
For example, some patients with chronic ITP experience years of easy bruising and abnormally heavy vaginal bleeding. They may have repeated episodes of more severe bleeding.
Most children with acute ITP recover within four to six weeks.
Some people have such mild disease that they almost never have noticeable bleeding problems.
Many people with drug-induced thrombocytopenia recover within 7 to 10 days after they stop taking the medication.