DISEASES INDEX [R]

SIGNS SYMPTOMS / DISEASES INDEX [R]

Common Diseases List (R): Find medical advices, information and definitions about common diseases, illnesses, disorders, syndroms and deficincies. What are the signs, symptoms, causes, diagnosis, management, and treatments information. Click the disease link to view details.

Renal osteodystrophy is described as a bone pathology marked by defective mineralization as a consequence of kidney disease. Renal oseodystrophy has two distinct forms, namely high bone turnover & low bone turnover....
Simply put, renal tuberculosis is the kidney affected by tuberculosis. This is normally because of some haematogenous seeding from pulmonary diseases, although it is secondary to a tuberculous infection of the gastrointestinal tract or bone. By the time this condition is diagnosed, the primary lacer...
Renal tubular acidosis (RTA) is characterized by the accumulation of acid in the body as a consequence of the failure of the kidney to adequately acidify urine. The term renal tubular acidosis is attributed mostly to defective urinary acidification in otherwise well-functioning kidneys. There are di...
Repetitive strain injury (RSI) pertains to a range of conditions that result from the overuse of certain tools such as a computer, guitar, or knife, or other activities that require movement repetition. RSI commonly affects the muscles, tendons & nerves of the hands, arms & upper back. RSI is also a...
Respiratory acidosis is the abnormal increase of acidity in the blood as a consequence of decreased ventilation of the pulmonary alveoli, which leads to an increase in carbon dioxide concentration (PaCO2). Respiratory acidosis can be either acute or chronic....
Respiratory Diphtheria is an acute, toxin-mediated disease caused by virus called Corynebacterium diphtheriae. There are 2 main forms: respiratory & cutaneous. This kind of condition lasts for several days....
Respiratory diphtheria pertains to an acute bacterial illness infecting the throat....
Respiratory failure is a medical term describing the inability of the lungs to accurately & properly function. Respiratory failure can be shown by observing the oxygen (too low) & carbon dioxide (too high) levels in the blood due to a break down in gas exchange (the process of exchange between air s...
Respiratory infection is more commonly known as upper respiratory infection of (URI). This is a type of infection of the head & chest caused by a virus. The nose, throat, sinuses, ears & airways are affected. This infection usually lasts a couple of weeks....
Respiratory syncytial virus definition: This virus causes infections in the lungs & respiratory tract. This virus commonly affects children by the age of 2 & even adults. Infection can severe especially when it infects premature babies & infants with underlying health conditions....
Respiratory system cancer is a range of carcinomas commonly found in the respiratory system. Respiratory system cancer may encompass all organs involved in the breathing process, including: lung cancer, mouth cancer, oral cancer, throat cancer, tongue cancer, larynx cancer, pharynx cancer & bronchia...
Restless legs syndrome (RLS), also known as Wittmaack-Ekbom's syndrome, is a progressive neurological disease characterized by an irresistible urge to move one's body to halt odd or uncomfortable sensations. This condition usually affects the legs, but can also affect the arms & torso....
Restrictive cardiomyopathy is the least usual cardiomyopathy. It is called as such due to the fact that it limits the heart from extending & filling it with blood correctly. The firm walls of the chambers of the heart prevent them from properly filling even though the rhythmicity & contractility of ...
Reticuloendotheliosis is characterized by a lymphoma (or cancer that arises from the lymphocytes) of a part of the immune system known as the reticuloendothelial tissue. Leukemic reticuloendotheliosis, also known as hairy cell leukemia, is the most common type of reticuloendotheliosis. In this form ...
Retinal degeneration refers to the deterioration of the retinal tissue. The degeneration of the retina may occur as a consequence of a number of factors, including vein or artery occlusion, diabetic retinopathy & hereditary RLF/ROP disease, among others. Several types of progressive retinal degenera...
Retinal detachment is an eye disorder there the retina peels away from the core layer of supporting tissue. At first, detachment may be localized, but if not treated quickly the whole retina may be detached. This can lead to loss of vision or blindness....
Retinitis pigmentosa (RP) pertains to a group of genetic eye conditions characterized by progressive night blindness preceded by an extended period of tunnel vision. In retinitis pigmentosa, abnormalities of the photoreceptors or the presence of retinal pigment epithelium (RPE) cause progressive vis...
Retinoblastoma pertains to cancer of the retina that affects children. If untreated, retinoblastoma is almost invariably fatal....
Retinoschisis refers to the abnormal splitting of the neurosensory layers of the retina. The splitting usually occurs in the outer plexiform layer. In rare cases, retinoschisis results in vision loss. However, in most cases, it remains asymptomatic....
Retractile testicle is a condition in which the testicle glides back & forth between the scrotum & the groin....
Retrograde ejaculation is release of semen into the bladder instead of through the penis during orgasm resulting in the ejaculation of very little or no semen....
Retrolental fibroplasia definition: Also known as retinopathy of prematurity (ROP), retrolental fibroplasia (RLF), is an eye disease that primarily affects prematurely born babies....
Retroperitoneal fibrosis, also known as Ormond's disease, is a condition in which the fibrous tissue proliferates in the retroperitoneum, or the compartment of the body containing the renal tract, kidneys, aorta & various other structures....
Rett syndrome is a neurodevelopmental disorder mostly affecting females. This disease is categorized as a pervasive development disorder by the DSM-IV (Diagnostic & Statistical Manual of Mental Disorders)....
Revesz Debuse syndrome is an extremely rare condition characterized mostly by anemia, retinal disease & anomalies in the central nervous system....
Reye's syndrome is a disease commonly occurring in children characterized by a range of several detrimental effects to many organs in the body, particularly the liver & the brain. If undiagnosed & untreated early, it can be potentially fatal....
Reynolds syndrome is a rare disease, autoimmune in origin, characterized by scleroderma (i.e. hardened skin) & cirrhosis of the liver. This syndrome is closely associated with the combination of primary biliary cirrhosis & progressive systemic sclerosis. In some cases, Reynolds syndrome has been ass...
Rh disease, a condition affecting pregnant mothers, is one of the identified causes of hemolytic disease of the newborn (or HDN) & may range from mild to severe. In mild forms, Rh disease may cause mild anemia with reticulocytosis in the fetus. In moderate or severe forms, Rh disease can cause a mor...
Rhabdoid tumor pertains to a very rare & extremely aggressive tumor commonly occurring in children ages 2 to 13 years. Initially, rhabdoid tumor was believed to be a variant of Wilms' tumor. However, recent studies have shown that rhabdoid tumor is an entirely separate entity. The location of this h...
Rhabdomyolysis is described as the rapid breakdown (i.e. lysis) of the skeletal muscle tissue (i.e. rhabdomyo) as a consequence of a prior injury to muscle tissue....
Rhabdomyosarcoma is a rare form of cancer of the sarcoma (or connective tissues) commonly occurring in children ages 1 to 5 and, in some cases, teenagers ages 15 to 19. The malignant cells are believed to originate from skeletal muscle progenitors. The cancer may also attach itself to muscle tissues...
Rhabdomyosarcoma, embryonal definition: Embryonal rhabdomyosarcoma, also alternatively called sarcoma botryoides, is a rare form of vaginal cancer affecting female infants & children under 8 years old....
Rhesus isoimmunisation is a condition concerning the Rhesus (Rh) factor. This is a protein found in most people's red blood cells. A person who does not have this factor is considered Rh negative, a person who does is Rh positive. An Rh negative pregnant mother exposed to blood that is Rh positive p...
Rheumatic fever pertains to an inflammatory disease which develops as a consequence of complications from a Group A streptococcal infection (e.g. scarlet fever & strep throat, etc.). Rheumatic fever commonly affects children 6 to 15 years old....
Rheumatic Heart Disease pertains to a complication of rheumatic fever. This disease damages the entire heart & its membranes. It is a permanent damage to the heart due to a damaged heart valve. This disease used to be a serious form of heart disease for children & adolescents....
Rheumatism, also known as rheumatic disorder, is a general term encompassing medical problems affecting the bones, kidney, joints, skin, heart & lungs. While rheumatism is used colloquially or in a historical context, the word no longer appears in strict medical or technical literature. To date, the...
Rheumatoid arthritis is a chronic, potentially disabling autoimmune disease wherein the immune system attacks the joints, causing an inflammation in the joints (i.e. arthritis) as well as in other parts of the body (commonly in the lungs & the skin)....
Rheumatoid spondylitis is a chronic inflammatory arthritis. It is also referred to as ankylosing spondylitis or spondylitis....
Rhinitis is a condition describing the irritation & swelling of the inner part of the nose. This condition is also seen to affect the throat, eyes & ears. It is also associated with sleeping problems. Rhinitis can also be triggered by an allergy. There are two types: allergic & no-allergic rhinitis....
Rhinitis, vasomotor definition: Hay fever is a condition resulting from an allergic reaction to indoor or outdoor airborne allergens, such as dust mites, pollen, or pet dander....
Rhinophyma is a medical condition identified by an overgrowth of the sebaceous glands of the nose. It is part of a skin disorder called rosacea. In women, sensitive capillaries result in flushing & dilated small red veins made visible on the surface of the skin....
Rhupus is a disease characterized by rheumatism & lupus. It is a rare condition in which the hands of an affected person become deformed due to the growth of cysts & calcification of the cartilage. The main symptoms of this illness are numbness & immobility of the affected area. Treatment for the rh...
Rib gap syndrome definition: Rib-gap syndrome, also known as cerebrocostomandibular syndrome, is a rare autosomal recessive disorder that features an abnormally small jaw, deformed upper jaw, a refracted tongue & rib dysplasia. These deformities usually lead to respiratory problems as well as moderate to severe mental retardati...
Rib inflammation definition: Rib cage inflammation, also known as costochondritis, is the swelling of the ribs due to injuries & other abnormalities experienced by the chest....
Riboflavin deficiency pertains to a lack of Riboflavin, which is another name for vitamin B2. This disorder occurs when the patient does not have sufficient amount of vitamin B2 in the body. This deficiency is also known as ariboflavinosis....
Richter syndrome is an extremely rare disease characterized by the transformation of chronic lymphocytic leukemia (CLL) into a rapidly progressive form of lymphoma. Also known as Richter transformation, this disorder is a type of high grade non Hodgkin's lymphoma affecting patients with chronic lymp...
Ricin poisoning is a toxic effect experience by a person due to inhalation or intake of ricin, a protein toxin found in castor beans. It can be potentially painful when taken in large doses....
Rickets is a disease characterized by the softening of the bones in children, which can potentially lead to fractures & deformity. Although rickets can affect adults, most documented cases are those of malnourished or undernourished children living in developing countries....
Rickettsial diseases refer to a group of disorders caused by Rickettsiae, a type of microorganism that can be a cross between virus & bacteria. Rickettsiae can only survive inside cells & cause disease by damaging the blood vessels in various organs & tissues. In severe cases, multiple organs and/or...
Rickettsialpox is a disease commonly presented by fever, lethargy, headache, skin rashes & damage to the blood vessels. The disease is caused parasitic arthropods that thrive in the body causing ruptures in the lymph nodes. Rickettsialpox can be detected by serological tests & can be treated by tetr...
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