Prime
- Kala azar
- Kaletra
- Kaposi's sarcoma
- Kaposi's sarcoma, treatment choices
- Kaposi's sarcoma, treatment in AIDS
- Katayama fever
- Kawasaki syndrome
- Kayexalate, for hyperkalemia
- Keratitis (corneal ulcer or inflammation)
- Kerlone
- Kerosene poisoning
- Ketoacidosis, diabetic
- Ketoprofen
- Ketorolac tromethamine
- Ketorolac tromethamine 0.5% solution
- Ketotifen fumarate 0.025% solution
- Kidneys, large
- Kidney stones
- Kleine-Levin syndrome
- Klinefelter's syndrome
- Klonopin
- Knee, overuse syndromes
- Knee effusion
- Knee pain
- Koebner's phenomenon
- Kussmaul's sign