<prompt> Neutropenia is seen in all except:ScurvyAplastic anemiaTyphoid feverChloramphenicol  <response>: Ans: A Scurvy Ref: Harrisons Principles of Internal Medicine, 18 ed.Explanation:Severity of neutropenia based on the absolute neutrophil count ANC measured in cells per microliter of blood:Mild neutropenia 1000 ANC 1500 minimal risk of infectionModerate neutropenia 500 ANC 1000 -- moderate risk of infectionSevere neutropenia ANC 500 -- severe risk of infection.Causes of NeutropeniaCauses can be divided into the following groups:Decreased production in the bone marrow due to:Aplastic anemiaArsenic poisoningCancer, particularly blood cancersHereditary disorders e.g. Congenital neutropenia. cyclic neutropeniaRadiationVitamin B 12, Folate or copper deficiency.Increased destruction:Autoimmune neutropenia.Chemotherapy treatments, such as for cancer and autoimmune diseasesMarginalisation and sequestration:HemodialysisMedications:ChloramphenicolPhenytoinIndomethacinPropylthiouracilCarbimazoleChlorpromazineTrimethoprimsulfamethoxazoleClozapineTiclodipineInfectionsTuberculosisTyphoid feverBrucellosisTularemiaMeaslesInfectious mononucleosisMalariaViral hepatitisAIDS 