What are the signs of hypoglycemia?

The signs of hypoglycemia predominantly include sweating, shakiness, confusion, and irritability. These symptoms arise due to the body's response to low blood sugar levels. When glucose levels drop, the body activates its stress response, leading to the release of adrenaline (epinephrine), which triggers sweating and shakiness. Additionally, low blood glucose levels can adversely affect brain function, leading to confusion and irritability as the brain lacks the necessary fuel to function optimally.

The other choices include symptoms that are not typically associated with hypoglycemia. For instance, dry skin, lethargy, and frequent urination are more indicative of hyperglycemia or dehydration rather than a low blood sugar state. Similarly, nausea, vomiting, and headache can occur for various reasons but are not characteristic signs of hypoglycemia. Therefore, the combination of sweating, shakiness, confusion, and irritability provides a clear picture of the body's response to inadequate glucose levels, making this option the most fitting representation of hypoglycemia.