how do i know if i have low blood sugar

To know if you have low blood sugar (hypoglycemia), look for common symptoms such as shakiness, sweating, dizziness, hunger, fast or irregular heartbeat, irritability, anxiety, headache, weakness, and trouble concentrating. Symptoms can appear suddenly and vary among individuals. If low blood sugar occurs during sleep, symptoms may include sweating, nightmares, or waking up tired or confused. Severe low blood sugar can cause confusion, clumsiness, slurred speech, seizures, loss of consciousness, or in rare cases, death. It is important to check your blood sugar with a glucose meter if you experience these symptoms, especially if you have diabetes or are at risk, as treatment may be needed promptly to prevent worsening symptoms.