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: Pericarditis - After Heart Attack
Pericarditis - after heart attack is an inflammation of the pericardium days to weeks after a heart attack. Learn about pericarditis after a heart attack causes, symptoms, treatment and prevention. See more »
Reifenstein Syndrome
Reifenstein syndrome, a genetic disorder, makes cells less responsive to male hormones. Learn about Reifenstein syndrome causes, symptoms, treatment and prevention.
See more »Reiter Syndrome
Reiter’s syndrome consists of arthritis, urethritis, conjunctivitis and mucous membrane and skin lesions. Learn about Reiter’s syndrome causes, symptoms, tests, treatment and prevention.
See more »Relapsing Fever
Relapsing fever is the repeated fever episodes and crises from a tick or louse transmitted infection. Learn about relapsing fever causes, symptoms, tests, treatment and prevention.
See more »Renal
The term "renal" refers to the kidney; for example, renal failure means kidney failure. See related topics to “renal” and other medical terms.
See more »Renal And Urologic Disorders
Renal and urologic disorders are any disorders of the kidneys or kidney/urinary tract. Learn about renal and urologic disorder causes, symptoms, treatment and prevention.
See more »Renal Artery Stenosis
Renal artery stenosis is narrowing or blockage of the artery supplying the kidney. Learn about renal artery stenosis causes, symptoms, treatment and prevention.
See more »Renal Cell Carcinoma
Renal cancer or renal cell carcinoma is a type of kidney cancer in the lining of kidney tubules. Learn about renal cancer causes, symptoms, tests, treatment and prevention.
See more »Renal Papillary Necrosis
Renal papillary necrosis is death of some or all of the renal papillae. Learn about renal papillary necrosis causes, symptoms, treatment and prevention.
See more »Renal Vein Thrombosis
Renal vein thrombosis is a blood clot in the vein that drains blood from the kidney. Learn about renal vein thrombosis causes, symptoms, treatment and prevention.
See more »Renovascular Hypertension
Renovascular hypertension is high blood pressure due to narrowing of the arteries to the kidney. Learn about renovascular hypertension causes, symptoms, treatment and prevention.
See more »Repeated Nightmares
Repeated nightmares are a reoccurring theme in a series of bad dreams usually in girls under age 10. Repeated nightmares are normal unless interfering with sleep or development.
See more »Respiratory
The words "respiratory" and "respiration" refer to the lungs and breathing. Learn more about topics related to “respiratory” and other medical terms.
See more »Respiratory Acidosis
Respiratory failure or respiratory acidosis is an increase in body fluid acidity due to the lung’s failure to remove carbon dioxide. Learn about respiratory failure causes, symptoms, tests, treatment and prevention.
See more »Respiratory Alkalosis
Respiratory alkalosis is marked by low levels of carbon dioxide in the blood. Learn about respiratory alkalosis causes, symptoms, treatment and prevention.
See more »Respiratory Distress Syndrome (RDS) In Infants
Respiratory distress syndrome (RDS) in infants causes increasing difficulty breathing. Learn about RDS in infant causes, symptoms, treatment and prevention.
See more »Respiratory Syncytial Virus (RSV)
Respiratory syncytial virus or RSV is a common virus causing cold-like symptoms but poses serious respiratory threat to infants. Learn about respiratory syncytial virus causes, symptoms, tests, treatment and prevention.
See more »Restless Leg Syndrome
Restless leg syndrome (RLS) or nocturnal myoclonus is a sleep disorder causing frequent leg movement to relieve discomfort. Learn about restless leg syndrome causes, symptoms, tests, treatment and prevention.
See more »Restrictive Cardiomyopathy
Restrictive cardiomyopathy is a group of disorders affecting the heart chambers. Learn about restrictive cardiomyopathy causes, symptoms, treatment and prevention.
See more »Retinal Detachment
Retinal detachment is a separation of the retina from its supporting layers. Learn about retinal detachment causes, symptoms, treatment and prevention.
See more »Retinal Vessel Occlusion
Retinal vessel occlusion is a blockage of the blood supply to the retina. Learn about retinal vessel occlusion causes, symptoms, treatment and prevention.
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