| CAS | calcarine sulcus; calcific aortic stenosis; Cancer Attitude Survey; carbohydrate-active steroid; car... |
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| CAW | central airways |
| CBN | cannabinol; central benign neoplasm; Commission on Biological Nomenclature |
| CBV | capillary blood cell velocity; catheter balloon valvuloplasty; central blood volume; cerebral blood ... |
| CC | calcaneal-cuboid; calcium cyclamate; cardiac catheterization; cardiac contusion; cardiac cycle; card... |
| cerebrospinal fever | An acute infectious disease affecting children and young adults, caused by Neisseria meningitidis; characterised by nasopharyngeal catarrh, headache, vomiting, convulsions, stiffness in the neck (nuchal rigidity), photophobia, constipation, cutaneous hyperesthesia, a purpuric or herpetic eruption, and the presence of Kernig's sign. Fulminant form may cause Waterhouse-Friderichsen syndrome. Synonym: cerebrospinal fever, epidemic cerebrospinal meningitis. (05 Mar 2000) |
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| meningotyphoid fever | Typhoid fever marked by symptoms of irritation or inflammation of the cerebral or spinal meninges. (05 Mar 2000) |
| Charcot's intermittent fever | Fever, chills, right upper quadrant pain, and jaundice associated with intermittently obstructing common duct stones. (05 Mar 2000) |
| rheumatic fever | <microbiology> Disease involving inflammation of joints and damage to heart valves that follows streptococcal infection and is believed to be autoimmune, i.e. Antibodies to streptococcal components cross react with host tissue antigens. (18 Nov 1997) |
| periodic fever | An obsolete term introduced to describe the intermittent febrile episodes seen in disease later recognised and named familial Mediterranean fever. (05 Mar 2000) |
| childbed fever | Postpartum sepsis with a rise in fever after the first 24 hours following delivery, but before the eleventh postpartum day. Synonym: childbed fever, puerperal sepsis. (05 Mar 2000) |
| rice-field fever | A febrile illness affecting workers in rice fields, reported in Po valley in Italy and in Sumatra, caused by infection with a species of Leptospira. (05 Mar 2000) |
| rift valley fever | A febrile disease resembling dengue. It is caused by a mosquito-borne arbovirus. (12 Dec 1998) |
| rift valley fever virus | A mosquito-borne species of the phlebovirus genus and member of the sandfly fever group viruses found in eastern, central, and southern africa, producing massive hepatitis, abortion, and death in sheep, goats, cattle, and other animals. It also has caused disease in humans. (12 Dec 1998) |
| metal fume fever | An occupational disease, characterised by malaria-like symptoms, due to inhalation of particles and fumes of metallic oxides. Fumes are formed by evaporation at very high temperature and condensation in air into fine particles. Synonym: brass founder's ague, foundryman's fever, metal fume fever, zinc fume fever. (05 Mar 2000) |
| Persian relapsing fever | A tick-borne relapsing fever, occurring in the Middle East, caused by Borrelia persica and transmitted by Ornithodoros tholozani and possibly by Ornithodoros lahorensis. Synonym: mianeh disease, mianeh fever. (05 Mar 2000) |
| petechial fever | idiopathic thrombocytopenic purpura |
| rocky mountain spotted fever | <infectious disease> An acute febrile (feverish) disease initially recognised in the Rocky Mountain states, caused by Rickettsia rickettsii transmitted by hard-shelled (ixodid) ticks. Occurs only in the Western Hemisphere. The disease is characterised by sudden onset of headache, chills and fever which can persist for 2-3 weeks, muscle pain. A characteristic rash appears on the extremities and trunk about the 4th day of illness. The rickettsiae grow within damaged cells lining blood vessels which may become blocked by clots. Blood vessel inflammation (vasculitis) is widespread Early recognition of the condition and prompt antibiotic treatment is important in reducing mortality. Synonym: spotted fever, tick fever, and tick typhus. (25 Jun 1999) |
| Rocky Mountain spotted fever vaccine | Suspension of inactivated Rickettsia rickettsii prepared by growing the rickettsiae in the embryonate yolk sac of fowl eggs. (05 Mar 2000) |
| Roman fever | Malignant tertian, falciparum, or aestivoautumnal fever, formerly prevalent in the Roman Campagna and in the city of Rome; caused by Plasmodium falciparum. (05 Mar 2000) |