What might indicate a person has high blood sugar?

High blood sugar, or hyperglycemia, can present with specific symptoms that help identify the condition. Fruity breath and dry mouth are classic indicators of this state, particularly in cases of diabetic ketoacidosis, a serious complication of diabetes. When blood sugar levels rise excessively, the body may start to produce ketones as an alternative energy source, leading to a sweet or fruity odor on the breath.

A dry mouth can also occur due to increased urination and dehydration, both common in individuals with high blood sugar. Understanding these signs is critical, as they can prompt immediate action to lower blood sugar levels and prevent further complications.

The other options describe symptoms that are typically associated with low blood sugar (hypoglycemia) or different medical conditions, which helps differentiate between hyperglycemia and hypoglycemia. Recognizing these distinct symptoms can be vital for effective first aid and distinguishing between these two types of blood sugar imbalances.