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Placebo and sham treatment are methods used in medical trials to help researchers determine the effectiveness of a drug or

Priapism is a condition in which the penis stays erect without sexual stimulation. It can affect people of any age. The most

Pulmonary valve stenosis is a narrowing of the valve between the lower right heart chamber and the pulmonary artery, which carries

The brand name (or trade name) of a medicine is the name given to the medicine by the manufacturing company. A medicine may have

Presbyopia is a condition in which the eyes are not able to focus on near objects. This usually happens around age 40, when the

Age-related hearing loss (presbycusis) is a progressive loss of the ability to hear that occurs as people get older. The problem

Premenstrual syndrome (PMS) is a set of physical or mood-related symptoms that occur before your menstrual period each month

Preeclampsia is high blood pressure and signs of organ damage, such as protein in the urine, usually after 20 weeks of pregnancy

Poison ivy, poison oak, and poison sumac are plants that have a sticky oil that can cause an itchy, red rash. The rash often shows

Phobias are extreme fears that interfere with daily life. Phobias are sometimes present with other conditions, such as panic