| Waardenburg syndrome |
| Waardenburg-Shah syndrome |
| Wake robin poisoning |
| Wakefulness |
| Waking at night short of breath |
| Waldenstrom’s macroglobulinemia |
| Walking abnormalities |
| Walking during sleep |
| Walking pneumonia |
| Walleye |
| Warm agglutinins |
| Warm shock |
| Wart removal |
| Wart remover poisoning |
| Warts |
| Washing soda poisoning |
| Wasp sting |
| Wasp sting |
| Wasting |
| Water contaminated with lead |
| Water deprivation test |
| Water in diet |
| Water loading test |
| Water on the brain |
| Water safety |
| Watercolors |
| Waterhouse-Friderichsen syndrome |
| Watery eyes |
| Wax blockage |
| Wax poisoning |
| Wax poisoning – paraffin |
| Waxy casts |
| WBC count |
| WBC esterase |
| WBC scan |
| Weak bones – premature infants |
| Weak pulse |
| Weakness |
| Weariness |
| Web finger repair |
| Web toe repair |
| Webbing of the fingers or toes |
| Weber-Cockayne syndrome |
| Weedoff poisoning |
| Weedy nightshade poisoning |
| Wegener’s granulomatosis |
| Weight gain – slow (child 0 – 5 years) |
| Weight gain – unintentional |
| Weight lifting and weight control |
| Weight loss – intentional |
| Weight loss – unintentional |
| Weight loss and age |
| Weight management |
| Weight problems and children |
| Weil disease |
| Weil-Felix reaction |
| Well-balanced diet |
| Well-child visits |