### Understanding High Blood Sugar (Hyperglycemia) High blood sugar, also known as hyperglycemia, can be dangerous for both people with and without diabetes. Hyperglycemia can cause symptoms like drowsiness, thirst, and frequent urination. Acute hyperglycemia, or elevated blood glucose (BG) levels, can occur due to various conditions, not just diabetes. ### Symptoms and Risks Symptoms of hyperglycemia include: - Drowsiness - Thirst - Frequent urination In severe cases, hyperglycemia can lead to diabetic ketoacidosis (DKA), a medical emergency that can cause coma or death. DKA is more common in people with type 1 diabetes and is suspected when glucose levels reach 300 mg/dL or above. ### Causes and Complications Hyperglycemia can result from stress, infections, or certain medications. Chronic hyperglycemia can damage the brain, heart, kidneys, and nerves. It can also lead to cerebral atrophy, affecting memory and mental abilities, and potentially causing dementia. ### Management and Treatment Managing blood glucose levels is crucial for people with diabetes. This involves a daily regimen of insulin injections, a healthy diet, regular exercise, and stress management. In case of a hyperglycemic episode, actions like physical exercise, drinking water, and taking insulin can help. If glucose levels remain high, seek medical care immediately. ### Conclusion Hyperglycemia poses serious risks, especially for those with diabetes. Recognizing the signs and taking corrective action can reduce the likelihood of long-term complications.