More than a green thumb

The pigmentation has a greenish tinge to it and if you look under the nail you will see that the nail plate is elevated from the nail bed and there is no subungual debris that you might expect with a fungus.

The pigmentation is in the nail plate itself and is due to a green pigment pyocyanin produced by the pseudomonas organism that is present here. Onycholysis or separation of the nail from the nail plate can be due to trauma, thyroid disease, drugs and other causes but this allows water to get in

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