Introduction,causes,signs and symptoms and pathogenesis, prevention: Diabetes mellitus is a disorder in which the body does not produce enough or respond normally to insulin, causing blood sugar (glucose) levels to be abnormally high. Urination and thirst are increased, and people may lose weight even if they are not trying to.Now let us understand the meaning of pathy.Pathy is denoting disorder in a particular part of the body.pathy: A suffix derived from the Greek pathos meaning suffering or disease .The complications or pathies associated with Diabets areneuropathy (nerve disease) Cardiomyopathy (Heart muscle disease) retinopathopathy (disease of the retina) nephropathy (disease of kidney),macro vascular