Estimated incidence of<unk>  is 0.4 per 100000 population, and the prevalence ranges from 1.6% to 40% in patients with autoimmune hemolytic anemia. The prevalence depends on the sensitivity of the immunologic methods applied. The age of onset is often <5 years in the pediatric population, with male predominance ranging from 2.5:1 to 5:1 in male-to-female ratio. The majority of<unk>  were accounted by congenital or tertiary syphilis in the early 1900s. Since the application of antibiotic therapy and prenatal screening, syphilitic<unk>  has become a rare entity. It is now increasingly recognized in pediatric patients with preceding viral-like illness.
Paroxysmal cold hemoglobinuria
Paroxysmal nocturnal hemoglobinuria
Hereditary spherocytosis
Mixed autoimmune hemolytic anemia
Congenital hemolytic anemia
Trimethylaminuria
Hemoglobin Lepore syndrome
Hereditary persistence of fetal hemoglobin