Difference Between Small Pox and Chicken Pox
Difference between chickenpox and smallpox is tabulated below
Feature | Smallpox | Chickenpox |
Caused by: | Smallpox is caused by the Variola virus | Chickenpox is caused by Varicella zoster virus |
Incubation Period: | It is 7-17 days for smallpox | It is 7-21 days for chickenpox |
Prodromal Symptoms | These are Severe in smallpox | These are Mild in chickenpox |
Distribution Of Rash | Centrifugal for smallpox | Centripetal for chickenpox |
Palms and Soles | Frequently Involved in smallpox | Seldom affected in chickenpox |
Axilla | Usually free in smallpox | Axilla is affected in chickenpox |
Rash | In smallpox it is Predominant on extensor surface, deep-seated, vesicles are multilocular, only one stage of rash is seen at one time and there is no inflammation around the rash. | In Chickenpox Predominant on flexor surface, Superficial, Vesicles are unilocular, dewdrop like different stages of rash can be seen at one time and there is an area of inflammation around the rash |
Evolution Of Rash | Slow in smallpox | Rapid in chickenpox |
Fever: | In smallpox, it Subsides with the appearance of rash but the temperature may rise again in the pustular stage | In chickenpox, Temperature rises with each crop of rash |
Chicken Pox Rash |
Small Pox Rash. |
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