- Poisoning
- Polarity Therapy
- Polio
- Polycystic Kidney Disease
- Polycystic Ovary Syndrome
- Polycythemia Vera
- Polydactyly and Syndactyly
- Polyglandular Deficiency Syndromes
- Polyhydramnios and Oligohydramnios
- Polymyalgia Rheumatica
- Polymyositis
- Polysomnography
- Porphyrias
- Portal Vein Bypass
- Positron Emission Tomography (PET)
- Post-Concussion Syndrome
- Post-Traumatic Stress Disorder
- Postmenopausal Bleeding
- Postpartum Depression
- Postpolio Syndrome
- Prader-Willi Syndrome
- Precocious Puberty
- Preeclampsia and Eclampsia
- Pregnancy
- Premature Ejaculation
- Premature Labor
- Premature Menopause
- Premature Rupture of Membranes
- Prematurity
- Premenstrual Dysphoric Disorder
