| Major Depression | 1 risk assessment, 2 quizzes |
| Malaria | 1 quiz |
| Malignant hypertension | 3 quizzes |
| Malignant otitis externa | 4 quizzes |
| Marijuana dependence | 1 risk assessment, 1 quiz |
| Marine animal stings or bites | 2 quizzes |
| Mastitis | 3 quizzes |
| Mastoiditis | 3 quizzes |
| Measles | 3 quizzes |
| Melanoma | 1 quiz |
| Menieres Disease | 1 quiz |
| Meningitis | 2 quizzes |
| Meningococcemia | 2 quizzes |
| Meniscus tear of knee | 3 quizzes |
| Menopause | 1 risk assessment, 1 quiz |
| Mental Retardation | 2 quizzes |
| Metastatic cancer to the lung | 1 quiz |
| Middle Ear Infection | 3 quizzes |
| Migraine Headache | 1 quiz |
| Mini Stroke | 6 quizzes |
| Morbid obesity | 1 risk assessment, 15 quizzes |
| Multiple myeloma | 1 quiz |
| Multiple Sclerosis | 1 quiz |
| Mumps | 2 quizzes |
| Myocarditis | 3 quizzes |