A member asked:

Brown/yellow discolouration on some fingernails, nail pitting too (very small & ver few) on some nails too, feeling of tenderness in fingernails. thyroid negative. fungal infection or nail psoriasis? (no history of skin psoriasis) no vit b12 deficien?

A doctor has provided 1 answer

could be nail psoriasis, esp if you suffer from psoriatic arthritis. Another possibility would be a contact dermatitis to nail products or artificial nails in the past. See dermatologist for eval and confirmation.

Answered 3/29/2021

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