Diabetes mellitus is a syndrome characterized by disordered metabolism and inappropriately high blood sugar (hyperglycaemia) resulting from either low levels of the hormone insulin or from abnormal resistance to insulin's effects coupled with inadequate levels of insulin secretion to compensate. The characteristic symptoms are excessive urine production (polyuria), excessive thirst and increased fluid intake (polydipsia), and blurred vision. These symptoms are likely absent if the blood sugar is only mildly elevated. use medical warning sign to protect yourself or a family member.Some medical ailments demand a medical ID symbol.Persons who should wear a medical ID: Food Drug or Insect allergies,Cardiac Patients (angina,arrhythmias, atrial fibrillation,pacemakers),Kidney Failure, Diabetes, blood disorders Pulmonary Conditions (Asthma, COPD), Alzheimer's/Memory Impairment, Emphysema/Breathing disorders, Rare diseases,Epilepsy/Seizure disorder, Hearing and sight or mentally impaired, Clinical trial participants,Special needs children, Hypertension,Stroke risk, People taking multiple medicines ...