<prompt> Which of the following is not a hereditary disease-NeurofibromatosisCretinismHuntingtons diseaseHereditary spherocytosis  <response>: Ans. is b i.e., Cretinism Cretinismo Cretinism is a condition of severely stunted physical and mental growth due to untreated congenital deficiency of thyroid hormones congenital hypothyroidism usually due to maternal hypothyroidism. Thus cretinism is a non hereditary condition. 