Polyphagia

Definition

Polyphagia is excessive or increased appetite, often associated with impaired glucose utilization as in uncontrolled diabetes mellitus.

Causes

• Diabetes mellitus (cells cannot use glucose without insulin)
• Hyperthyroidism
• Pregnancy
• Bulimia nervosa
• Certain medications (steroids, antihistamines)
• Depression/anxiety

Clinical Significance

One of the '3 P's' of diabetes: polyuria, polydipsia, polyphagia. Despite increased intake, patients with uncontrolled diabetes may lose weight because glucose cannot enter cells.

Nursing Interventions

Assess blood glucose and A1C. Evaluate for weight changes, such as educate on diabetes management, carbohydrate counting, and meal planning. Treat underlying hyperthyroidism or other causes.

NCLEX Relevance

3 P's of diabetes: polyuria, polydipsia, polyphagia + weight loss.