Question
A 78 year old man presents with a very well demarcated area of reddening on his left shin . There is induration & a raised border . what is causative organism ?
| A. |
Group B haemolytic streptococcus
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| B. |
Group A Beta hemolytic streptococcus
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| C. |
Group C haemolytic streptococcus
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| D. |
Staphylococcus aureus
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Show Answer
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Correct Answer � B
Explanation
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Correct answer : b
Erysipelas : Well demarcated (SHARP borders)
This is the typical picture of Erysipelas (AKA St AnthonyÕs re). It is characterised by the distinctive warm, red, tender skin lesion with induration and a sharply raised, rapidly advancing border.
Treatment of choice is iv or oral PENICILLIN, depending on the severity of the lesion.
In CONTRAST CELLULITIS has diffuse/ill Defined borders and is caused by BOTH staphylococcus aureus and streptococcus
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