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Diseases and Medical Conditions P-R provides down-to-earth, comprehensive definitions of hundreds of ailments and illnesses beginning with the letters P-R. Each listing identifies causes, incidence and risk factors, notes symptoms, outlines tests and discusses treatments and support groups where applicable.
Featured Article: Pharyngitis - Gonococcal
Pharyngitis – gonococcal is a sexually transmitted disease infecting the pharynx. Learn about gonococcal pharyngitis causes, symptoms, treatment and prevention. See more »
Posterior Tongue Carcinoma
Posterior tongue carcinoma is a malignant tumor on the back part of the tongue. Learn about posterior tongue carcinoma causes, symptoms, treatment and prevention.
See more »Potter Syndrome
Potter syndrome is a complex of findings associated with a lack of amniotic fluid and kidney failure. Learn about potter syndrome causes, symptoms, treatment and prevention.
See more »Prader-Willi Syndrome
Prader-Willi syndrome, a genetic defect, causes obesity, hypogonadism, and decreased mental capacity. Learn about Prader-Willi syndrome causes, symptoms, treatment and prevention.
See more »Precocious Puberty
Precocious puberty is the premature development of characteristics of puberty. Learn about precocious puberty causes, symptoms, treatment and prevention.
See more »Preeclampsia
Preeclampsia is elevated blood pressure and protein in the urine after the 20th week of pregnancy. Learn about preeclampsia causes, symptoms, treatment and prevention.
See more »Premature Ejaculation
Premature ejaculation occurs when a male orgasms during intercourse before his partner wishes. Learn about premature ejaculation causes, symptoms, treatment and prevention.
See more »Premature Infant
Premature infant or preemie is any infant born before the 37 week gestation period. Learn about common premature infant problems, symptoms, tests and treatment.
See more »Premenstrual Dysphoric Disorder
Premenstrual dysphoric disorder (PMDD) is severe depression, irritability and tension before menstruation. Learn about PMDD causes, symptoms, treatment and prevention.
See more »Premenstrual Syndrome
Premenstrual syndrome (PMS) involves symptoms occurring 5-11 days prior to menstruation. Learn about common premenstrual syndrome symptoms, self help and prevention.
See more »Prerenal Azotemia
Prerenal azotemia is high levels of nitrogen-type wastes in the bloodstream. Learn about prerenal azotemia causes, symptoms, treatment and prevention.
See more »Presbyopia
Presbyopia, a progressive disorder, is when the lens of the eye loses its ability to focus. Learn about presbyopia causes, symptoms, treatment and prevention.
See more »Primary Alveolar Hypoventilation
Primary Alveolar Hypoventilation information from HowStuffWorks. Learn about causes, symptoms and treatments of Primary Alveolar Hypoventilation.
See more »Primary Amyloidosis
Primary amyloidosis is when insoluble protein fiber deposits impair organ and tissue functions. Learn about primary amyloidosis causes, symptoms, treatment and prevention.
See more »Primary Biliary Cirrhosis
Primary biliary cirrhosis is inflammation of the bile ducts impeding bile flow. Learn about primary biliary cirrhosis causes, symptoms, treatment and prevention.
See more »Primary Hyperparathyroidism
Primary hyperparathyroidism is when parathyroid enlargements causes excess parathyroid hormone production. Learn about primary hyperparathyroidism causes, symptoms, treatment and prevention.
See more »Primary Insomnia
Primary Insomnia is difficulty getting or staying asleep because of no known physical or mental condition. Learn about primary insomnia causes, symptoms, tests and treatment.
See more »Primary Intestinal Pseudo-obstruction
Primary or idiopathic intestinal pseudo-obstruction is an intestinal obstruction with no physical evidence. Learn about primary or idiopathic intestinal pseudo-obstruction causes, symptoms, treatment and prevention.
See more »Primary Lymphoma Of The Brain
Primary lymphoma of the brain is a malignant brain tumor that did not spread from another body part. Learn about primary lymphoma causes, symptoms, tests and treatment.
See more »Primary Myelofibrosis
Primary myelofibrosis, a bone marrow disorder, is when scar tissue replaces marrow. Learn about primary myelofibrosis causes, symptoms, treatment and prevention.
See more »Primary Or Secondary Fibrinolysis
Primary or secondary fibrinolysis is the break down of blood clots through normal or medical means. Learn about primary or secondary fibrinolysis causes, symptoms, treatment and prevention.
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