You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Reticulocytosis is seen in all except : and explain in detail?
Nutritional anemia [Ref. Harrison 17h/e p 359, 360 &IOW p 333, 334, 607 and Ghai 6th/e p. 306J Congenital dyserythropoietic anemia Congential dyserythropoietic anemia represents a family of inherited refractory anemais characterized by ineffective erythropoiesis. Clinically it is characterized by varying degrees of anemia inspite of increased marrow elythroid activity. There is reticulocytosis but it is less than expected for the degree of anemia. Paroxysmal nocturnal hemoglobinuria Paroxymal nocturnal heoglobinuria is an acquired clonal stem cell disorder characerisized by the production of abnormal erythrocytes, granulocytes, and platelets. The red cell defect renders them more susceptible to complement mediated intravascular lysis. Clinically P.N.H. is characterized by chronic intravascular hemolysis. The blood usually shows a normocytic anemia with a reticulocytosis that is often less than expected for the degree of anemia.