Varicella (chickenpox) is characterized by a rash, often the first sign of the disease. The rash of chickenpox develops in crops with raised red spots arriving first, progressing to blisters that burst, creating open sores, before crusting over. This process usually starts on the scalp, then the trunk (its area of greatest concentration), and finally the arms and legs. Any area of skin that is irritated (by diaper rash, eczema, sunburn, etc.) is likely to be hard hit by the rash. The rash is typically very itchy (pruritic).
- Rash, yeast diaper
Infection in the diaper area caused by a yeast formerly called Monilia and now called Candida. These organisms are part of the germs normally found in various parts of the body and ordinarily do not cause any symptoms. Certain conditions, such as antibiotic use or excessive moisture, may upset the balance of microbes and allow […]
- Rasmussen encephalitis
648-651, 1994.) Plasmapheresis (skimming off the blood plasma) has been tried (to remove the GluR3) but the improvement was short-lived. Rasmussen’s encephalitis is also known as chronic focal encephalitis or chronic progressive epilepsia paritalis continua of childhood.
- Rasmussen syndrome
A rare brain disorder that is caused by inflammation of brain cells in one hemisphere. Rasmussen syndrome, whose cause is unknown, features seizures that can be difficult or impossible to control with medication, and it eventually results in brain shrinkage (atrophy). Treatment is surgery, if possible. The inflammation seems to stop of its own accord […]
Radioallergosorbent test, an allergy test that is done on a sample of blood. RAST is used to check for allergic sensitivity to specific substances.
- Rat-flea typhus
Murine typhus, an acute infectious disease with fever, headache, and rash, all quite similar to, but milder than, epidemic typhus, caused by a related microorganism, Rickettsia typhi (mooseri), transmitted to humans by rat fleas (Xenopsylla cheopis). The animal reservoir includes rats, mice and other rodents. Murine typhus occurs sporadically worldwide but is more prevalent in […]