Fitness basics
Learning Center
Poison ivy and other summer skin irritants
Take a look at these bumps, bites and rashes. Find out what causes them and how they can be treated.
Pneumonia
Pneumonia — Learn about the symptoms, causes and treatment of this serious lung infection.
Peyronie disease
Understand what causes bent and painful erections and learn what treatments are available.
Penis pump
Find out how this device can be placed on your penis to create an erection.
Parkinson's test (a-Synuclein seed amplification assay)
Learn how this test may affect how Parkinson's disease is diagnosed in the future.
Pancreatic cancer
Learn about symptoms, risk factors, prevention, diagnosis, surgery, chemotherapy and other treatments for this serious condition affecting the pancreas.
Palliative care
Learn what to expect with this care approach that offers symptom relief for seriously ill people of any age.
Pacemaker
This cardiac pacing device is placed in the chest to help control the heartbeat. Know when you might need one.
PSA test
Learn about this prostate cancer screening test, including why it's done, what to expect, risks and results.
Ozone air purifiers: Can they improve asthma symptoms?
Ozone air purifiers don't reduce asthma symptoms. In fact, they can make asthma worse.
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