Chickenpox (or chicken pox) is a highly contagious disease caused by primary infectionwith varicella zoster virus (VZV). It usually starts with vesicular skin rash mainly on the body and head rather than at the periphery and becomes itchy, raw pockmarks, which mostly heal without scarring. On examination, the observer typically finds skin lesions at various stages of healing and also ulcers in the oral cavity & tonsil areas. Chickenpox is an airborne disease which spreads easily through coughing or sneezing of ill individuals or through direct contact with secretions from the rash. A person with chickenpox is infectious one to two days before the rash appears. They remain contagious until all lesions have crusted over (this takes approximately six days).Immunocompromised patients are contagious during the entire period as new lesions keep appearing. Crusted lesions are not contagious. Chickenpox has been observed in other primates, including chimpanzees and gorillas. There are several theories regarding the origin of the term chicken pox. It is often stated to be a modification of chickpeas (based on resemblance of the vesicles to chickpeas),or due to the rash resembling chicken pecks. Other theories include the designationchicken for a child (i.e., literally 'child pox') or a corruption of itching-pox. Samuel Johnson explained the designation as "from its being of no very great danger."[1
* Mumps is a highly contagious viral infection with an incubation period of 14-18 days from exposure to onset of symptoms. The duration of the disease is approximately 10 days. * The initial symptoms of mumps infection are nonspecific (low-grade fever, malaise, headache, muscle aches, and loss of appetite). The classic finding of parotid gland tenderness and swelling generally develops the third day of illness. The diagnosis is generally made without the need for laboratory tests. * The common cold (also known...
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