Past Medical History (PMH) summarizes important information including which items?

• A. Allergies and diseases that might influence dental care
• B. Insurance and employment
• C. Diet preferences
• D. Vaccination history only

Answer: (A)

Past Medical History focuses on medical conditions, allergies, and other health factors that could affect dental treatment. The item that fits best is allergies and diseases that might influence dental care because these details directly guide safe treatment planning, drug choices, and precautions during procedures. For example, knowing a patient is penicillin-allergic changes antibiotic selection, while diabetes or heart conditions influence infection risk, healing, and monitoring during treatment.

Insurance and employment aren’t medical facts and don’t alter clinical decisions. Diet preferences can affect long-term oral health but aren’t the core content of PMH. Vaccination history is important for overall health and infection risk, but PMH is broader than just immunizations and centers on conditions and allergies that could impact dental care.