Learn more about what ails you. Here are some common symptoms.
Common Symptoms:
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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: Peripheral Artery Disease And Intermittent Claudication In-Depth
Peripheral artery disease and intermittent claudication occur when plaque clogs arteries in the extremities. Learn more about peripheral artery disease. See more »
Paranoid Personality Disorder
Paranoid personality disorder is a psychiatric condition of extreme distrust and suspicion of others. Learn about paranoid personality disorder symptoms, tests and treatments.
See more »Paraphimosis
Paraphimosis is an uncircumcised male’s inability to pull a retracted foreskin over the penis head. Learn about paraphimosis causes, symptoms, treatment and prevention.
See more »Parapneumonic Pulmonary Effusion
Parapneumonic pulmonary effusion is a pleural effusion fluid build up during pneumonia. Learn about parapneumonic pulmonary effusion causes, symptoms, treatment and prevention.
See more »Paraquat Lung
Paraquat lung is a lung disease caused by inhaling the weed killer Paraquat. Learn about Paraquat lung causes, symptoms, treatment and prevention.
See more »Parathyroid Adenoma
Parathyroid adenomas are benign tumors of the parathyroid gland. Learn about parathyroid adenoma causes, symptoms, treatment and prevention.
See more »Parathyroid Cancer
Parathyroid cancer is a malignant tumor in a parathyroid gland and is often identified through hypercalcemia. Learn about parathyroid cancer symptoms, tests and treatments.
See more »Parathyroid Hyperplasia
Parathyroid hyperplasia is enlargement of all 4 parathyroid glands causing hypercalcemia. Learn about parathyroid hyperplasia causes, symptoms, treatment and prevention.
See more »Parinaud Syndrome
Parinaud's syndrome is an eye problem that swells lymph nodes and causes illness and fever. Learn about a Parinaud’s syndrome causes, symptoms, treatment and prevention.
See more »Parkinson’s Disease
Parkinson’s disease is a brain disease reducing dopamine levels thus impairing coordination and movement. Learn about Parkinson’s disease symptoms, tests and treatments.
See more »Parkinson’s Disease - Resources
The organizations and links listed are good resources for information on Parkinson's disease. See more Parkinson’s disease resources and organizations.
See more »Paronychia
Paronychia is a superficial bacterial or fungal infection of the skin around nails. Learn about paronychia causes, symptoms, treatment and prevention.
See more »Paroxysmal Cold Hemoglobinuria (PCH)
Paroxysmal Cold Hemoglobinuria (PCH) information from HowStuffWorks. Learn about causes, symptoms and treatments of Paroxysmal Cold Hemoglobinuria (PCH).
See more »Paroxysmal Nocturnal Hemoglobinuria (PNH)
Paroxysmal Nocturnal Hemoglobinuria (PNH) information from HowStuffWorks. Learn about causes, symptoms and treatments of Paroxysmal Nocturnal Hemoglobinuria (PNH).
See more »Paroxysmal Supraventricular Tachycardia (PSVT)
Paroxysmal supraventricular tachycardia (PSVT) is an occasional rapid heart rate. Learn about (PSVT) causes, symptoms, treatment and prevention.
See more »Partial (focal) Seizure
Partial (focal) seizures are episodes of localized abnormal brain activity. Learn about partial (focal) seizure causes, symptoms, treatment and prevention.
See more »Passive-aggressive Personality Disorder
Passive-aggressive personality disorder is a passive compliance with others’ needs while internally resisting them, becoming increasingly hostile. Learn about passive-aggressive personality disorder causes, symptoms, treatment and prevention.
See more »Patent Ductus Arteriosus
Patent ductus arteriosis (PDA) is when an infant’s ductus arteriosus fails to close normally after birth. Learn about PDA causes, symptoms, treatment and prevention.
See more »Patent Foramen Ovale
Patent foramen ovale is a hole between heart chambers that failed to close after birth. Learn about patent foramen ovale causes, symptoms, treatment and prevention.
See more »Pathological Gambling
Pathological gambling is the inability to resist impulses to gamble. Learn about pathological gambling causes, symptoms, treatment and prevention.
See more »Pediatric Asthma
Pediatric asthma is a narrowing of the airways which leads to difficulty breathing in children. Learn about pediatric asthma causes, symptoms, treatment and prevention.
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Common Conditions:
