<prompt> Primary Hypothyroidism is seen in all EXCEPTIodine deficiencyIodine excessLithiumBexarotene  <response>: D Bexarotene Causes of Hypothyroidism Secondary. Hypopituitarism: tumors., pituitary surgery or irradiation, infiltrative disorders, Sheehans syndrome, trauma, genetic forms of combined pituitary hormone deficiencies. Isolated TSH deficiency or inactivity. Bexarotene treatment. Hypothalamic disease: tumors, trauma, infiltrative disorders, idiopathic. 