During outpatient physical therapy, lethargy, confusion, and excessive thirst should prompt referral to assess for which condition?

• A. Hypoglycemia
• B. Hyperglycemia
• C. Hypothyroidism
• D. Hyperthyroidism

Answer: (B)

Lethargy, confusion, and excessive thirst point to hyperglycemia. When blood glucose is high, the body pulls water from cells and attempts to excrete the excess sugar through the urine, leading to dehydration and increased thirst. The dehydration and elevated glucose can also contribute to impaired brain function, causing confusion or drowsiness. This combination is a red flag for poor glycemic control or new-onset diabetes and warrants medical evaluation.

By contrast, hypoglycemia tends to produce symptoms like shakiness, sweating, anxiety, palpitations, and sometimes confusion, but not the pronounced thirst seen with high blood glucose. Thyroid disorders can cause fatigue, but they don’t typically present with sudden thirst and acute confusion, so they fit less well with these symptoms.