Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.
A pacemaker is a small device that helps the heart beat normally. See how it’s put in the chest, and how it uses electrical signals to keep the heart on track.
Paget disease of the bone is a chronic bone disorder. It causes bones to become enlarged and deformed. Bone may become dense, but fragile, because of excessive breakdown and deformation of bone. The disease is the most common bone ...
The palate is divided into two parts: the bony hard palate in the front, and the fleshy soft palate in the back of the mouth. Cancer of the palate usually first noticed as an ulcer in the mouth. Tobacco and alcohol use are risk factors ...
Pancreatic cancer is cancer that starts in your pancreas. The pancreas is a pear-shaped organ that lies behind the stomach and in front of your spine. Learn more about symptoms, diagnosis, and treatments.
A pancreatic neuroendocrine tumor is a type of cancer that forms tumors in the pancreas.
Pancreatic pseudocysts are collections of leaked pancreatic fluids. They may form next to the pancreas during pancreatitis.
Pancreatitis is the redness and swelling (inflammation) of the pancreas. This happens when digestive juices or enzymes attack the pancreas.
Panic disorder is when you have repeated, unexpected panic attacks and worry constantly about when the next one might happen. Medicines and therapy can help.
The diaphragm is a muscle that separates the chest and abdominal cavities. Paralysis of this muscle is uncommon. Causes and risk factors include cancer, traums and neuromuscular disorders. Treatment options run from observation to ...
Sleepwalking refers to a type of sleep disorder that involves walking while in a deep sleep. But despite the name, sleepwalking can actually refer to more than that.
Detailed information on parathyroid tumors, including symptoms and treatment
Parkinson disease is a motor system disorder that causes trembling, stiffness and trouble moving.
Parkinson disease is a movement disorder that can cause muscles to tighten and become rigid. It can make it hard to walk and engage in daily activities.
In parotid duct obstruction, part of your parotid duct becomes blocked. As a result, saliva can't flow normally from your parotid gland into your mouth.
Jumper's knee is caused by overuse of your knee joint, such as frequent jumping on hard surfaces. It's usually a sports-related injury, linked to leg muscle contraction and the force of hitting the ground.
Patent ductus arteriosus (PDA) is a heart defect found in the days or weeks after birth. Read on to learn about symptoms, diagnosis, and treatment options.
A patent foramen ovale (PFO) is a small hole between the two upper chambers of the heart, the right and the left atrium. Here's what you need to know.
Pelvic congestion syndrome is a condition that causes chronic pelvic pain. It is thought to be caused by problems with the veins in the pelvic area. This is the lower part of your abdomen.
Fractures of the pelvis are uncommon and usually happen during high-speed accidents (such as car or motorcycle crashes) or falls from great heights. Severe fractures can be life-threatening. A minor fracture is usually treated with bed ...
Pelvic inflammatory disease or PID is an infection of a woman’s reproductive tract. Scar tissue grows between internal organs leading to ongoing pelvic pain. It can also lead to ectopic pregnancy.
Pelvic inflammatory disease is a bacterial infection of the pelvic organs. It may affect only the fallopian tubes, or it may include all the pelvic organs, the uterus, ovaries, and fallopian tubes. This video explains how this common ...
Pelvic pain is a challenging condition that can be due to many possible causes.
Pemphigus is a rare group of autoimmune diseases. It causes blisters on the skin and mucous membranes throughout the body. Pemphigus vulgaris is the most common type of pemphigus.
Cancer that starts in cells in the penis is called penile cancer. Learn more about symptoms, diagnosis, and treatments.
Peptic ulcers are erosions in the lining of the esophagus, stomach, or duodenum. Ulcers in the stomach are called gastric ulcers, and duodenal ulcers if in the duodenum. This video explains the possible causes of this disease, including ...
A peptic ulcer is a sore on the lining of your stomach or the first part of your small intestine (duodenum).
Pericardial effusion is the buildup of extra fluid in the space around the heart. If too much fluid builds up, it can put pressure on the heart. This can prevent it from pumping normally.
Pericarditis is inflammation of the pericardium, the thin sac that surrounds the heart.
Pericarditis is inflammation or infection of the pericardium. In children, pericarditis is most likely to happen after surgery to repair heart defects.
Perimenopause is the time around menopause when your body begins to change. You become less fertile and hormone levels fluctuate.