Which condition is characterized by an inability to use insulin effectively?

Type II diabetes is characterized by the body’s inability to use insulin effectively, a condition known as insulin resistance. In this type of diabetes, the pancreas may produce enough insulin, but the cells in the body do not respond to it as they should, leading to elevated blood glucose levels. This can result from a combination of genetic factors and lifestyle-related issues such as obesity and physical inactivity.

Individuals with Type II diabetes often experience symptoms such as increased thirst, frequent urination, fatigue, and blurred vision. Over time, if not managed properly, it can lead to serious health complications including heart disease, nerve damage, and kidney damage.

Type I diabetes, in contrast, occurs due to the autoimmune destruction of insulin-producing beta cells in the pancreas, leading to little or no insulin production. Diabetic shock refers to a severe drop in blood sugar levels, typically arising as a complication of diabetes but not directly related to insulin use. Seizure disorder is a neurological condition and does not relate to insulin effectiveness. Therefore, the hallmark of Type II diabetes being insulin resistance makes it the correct choice in this context.