psoriasis of fingernail, visible pitting.
a photograph showing effects of psoriasis on toenails.
psoriasis can affect nails , produces variety of changes in appearance of finger , toe nails. nail psoriasis occurs in 40–45% of people psoriasis affecting skin , has lifetime incidence of 80–90% in psoriatic arthritis. these changes include pitting of nails (pinhead-sized depressions in nail seen in 70% nail psoriasis), whitening of nail, small areas of bleeding capillaries under nail, yellow-reddish discoloration of nails known oil drop or salmon spot, thickening of skin under nail (subungual hyperkeratosis), loosening , separation of nail (onycholysis), , crumbling of nail.
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