Thrombocytopenia means low platelet counts. Platelets are blood cells, which help in stopping bleeding. There are many causes of this problem and one is autoimmune thrombocytopaenia. There are many endocrine diseases especially hormone deficiencies, which also have an autoimmune cause. Therefore in case person has thrombocytopaenia due to autoimmune cause, he or she can also have autoimmune endocrine illness.