Pituitary dwarfism is caused by deficiency to growth hormone released by the pituitary gland, in pituitary dwarfism the person is short in height but the mental level is normal.
Hypothyroidism during pregnancy causes cretinism that is characterized by defective development of the baby, stunted growth, abnormal skin development, mental retardation, deaf-mutism, etc. In adult women, hypothyroidism may cause the menstrual cycle to become irregular and it also leads to myxoedema.