The endocrine system consists of glands that secrete hormones directly into the bloodstream. Two suffixes related to the endocrine system are dipsia and uria. Dipsia refers to thirst, and common causes of excessive thirst or polydipsia include diabetes, diabetes mellitus, and diarrhea. Uria refers to urine, and common conditions are polyuria which is excessive urine production, and glycosuria which is sugar in the urine, both of which can be caused by uncontrolled diabetes.