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Green Nail Syndrome

By

Chris G. Adigun

, MD, Dermatology & Laser Center of Chapel Hill

Last full review/revision Dec 2019| Content last modified Dec 2019
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Topic Resources

Green nail syndrome is infection with Pseudomonas, a type of bacteria.

Green nail syndrome is caused by an infection with Pseudomonas species. It usually develops in people who have onycholysis (partial separation of the nail bed from the nail plate or loss of the nail plate) or chronic paronychia and whose hands are often in water or exposed to irritants. The nail in the area of onycholysis becomes greenish in color.

Green nail syndrome may be treated with antiseptics, antibiotics, and sometimes surgical removal of the involved nail. 

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Psoriasis
Psoriasis is a common chronic disease affecting 1 to 5% of the population worldwide. It causes distinctive raised, red patches with silvery scales. A border between the patch and normal skin is known as “psoriatic plaque.”  Which of the following is the reason these patches of plaque form?
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