Porphyrias are a group of genetic disorders caused by problems with how your body makes a substance called heme. Read more about types and symptoms. READ MORE
Polymyalgia rheumatica (PMR) is a disorder that causes muscle pain and stiffness in your neck, shoulders and hips. Read about diagnosis and treatment. READ MORE
Polycystic ovary syndrome (PCOS) happens when a woman's ovaries or adrenal glands produce more male hormones than normal. Learn the symptoms of PCOS and treatments. READ MORE
Poliovirus is very contagious. Get the facts on polio and post-polio syndrome. Take precautions when travelling and learn about the polio vaccine. READ MORE
A poison is any substance that is harmful to your body. The effects of poisoning range from short-term illness to brain damage, coma, and death. READ MORE
Spending time outdoors could result in contact with poison ivy, oak or sumac plants. Most people are sensitive, they can cause a blistering skin rash. READ MORE
Pheumocystis Infections are caused by a fungus in the lungs. The most common is pneumocystis pneumonia. Read about the first signs of this infection. READ MORE
Pneumococcal infections can be mild or severe. The most common types of infections are Meningitis, Sepsis, Pneumonia, and ear and sinus infections READ MORE
Pleura is the tissue that wraps around the outside of your lungs. Pleural disorders include pleurisy, pleural effusion and pneumothorax. Learn more. READ MORE
Platelets help wounds heal and prevent bleeding by forming blood clots. Learn about problems from having too few, too many, or abnormal platelets. READ MORE
Cosmetic surgery is performed to reshape the appearance of body parts. Cosmetic surgery can create physical changes and changes in self-esteem. READ MORE