A Child (Girl) is suffering from varicella (fever & rash) & and child’s aunt is pregnant. What is the earliest time, she can meet her aunt:
Correct Answer: When the lesions have crusted
Description: Ans: A (When the lesions have crusted) The crusts from chicken pox lesions donot contain viable virus and are therefore not infective."The period of infectivity lasts from 24-48 hrs before the rash until all the vesicle are crusted (the scab are not infective unlike small- pox"- O.P Ghai 7th /186Differences between smallpox and chickenpoxSmallpoxChickenpox1. Incubation P.: About 12 days (range : 7-17 days).About 15 days (range 7-21 days).2. Prodromal symptoms : Severe.Usually mild.3. Distribution of rash :* Palms and soles frequently involved* Axilla usually free* Rash predominant on extensor surfaces and bony prominences. Seldom affected Axilla affected Rash mostly on flexor surfaces.4. Characteristics of the rash* Deep-seated* Vesicles muitilocuiar and umbilicated* Only' one stage of rash may be seen at one time* Superficial* Unilocular: dew-drop like appearance* Rash pleomorphic, i.e., different stage of the rash evident at one given time, because rash appears in successive crops* No area of inflammation is seen around the vesicles* An area of inflammation is seen around the vesicles.5. Evolution of rash : * Evolution of rash is slow, deliberate and majestic, passing through definite stages of macule, papule, vesicle and pustule.* Evolution of rash very rapid* Scabs begin to from 10-14 days after the rash appears* Scabs begin to form 4-7 days after the rash appears6. Fever:* Fever subsides with the appearance of rash, but may rise again in the pustular stage (secondary rise of fever)* Temperature rises with each fresh crop of rash.It is a highly contagious disease. A centripetal pleomorphic rash appearing on the first day of the illness and has a relatively short course of illness.Children with chicken pox are removed from school or day care centres for 6 days after appearance of the rash.Varicella zoster immune gammaglobulin (VZ1G), 12S U/kg may prevent illness in household contacts if administered IM within 96 hrs of exposure particularly in:* Infants under 1 month of age* Prgnant with leukaemia* Patients on steroid therapy
Category:
Pediatrics
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now