Monday, April 4, 2011

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Infective endocarditis - cutaneous signs

The signs are caused by deposition of immune complex in the capillary circulation. These include:
1) Splinter hemorrhages : These are linear, subungual, dark red streaks especially in the fingers, less commonly in the toes. They are probably due to embolism to the linear capillaries in the nail bed.

2) Osler's nodes : These are painful, tender, pea-sized erythematous nodules in the pulps of fingers. They tend to occur in crops and are indicator of either embolism to distal digital arteries or an immunological phenomenon.

3) Janeway lesions : These are painless erythematous lesions on the palms. They blanch on pressure.


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