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Learn about arrhythmias and conditions that affect the heart and heartbeat.
See Polyarteritis Nodosa.
Learn more about pancreatitis, an inflammation of the pancreas that can cause severe belly pain and vomiting.
Learn about panic disorder, an anxiety disorder in which a person experiences recurrent feelings of intense fear when there's no real threat or danger.
Learn about causes of skin inflammation and conditions that affect infants and young children.
Learn about intestinal blockages and conditions that affect the digestive tract.
Parathesia is a burning, prickling, itching, or tingling "pins and needles" skin sensation. Anyone who has had a foot "fall asleep" has experienced temporary paresthesia.
Paronychia, an infection of the skin around a fingernail or toenail, usually isn't a serious problem.
Paroxysmal supraventricular tachycardia (PSVT) is a type of arrhythmia in which the heart beats very rapidly.
Patellar dislocation happens when the patella (kneecap) slips out of its normal position.
