1 doctor weighed in:

Is it possible that psoriasis can cause toe nail fungus I believe I have psoriasis on my foot according to research ?

1 doctor weighed in
Dr. Scott Keith
Podiatry

In brief: Either one, or both.

When one has psoriasis on the skin, they can also have it in the nails.
This is known as psoriatic nails. To complicate matters, one can also have a fungal infection involving the nail at the same time. This is called onycomycosis. So, as a result, you can have either condition, separately, or both, together. By nail appearance, both conditions can look very much alike, but treated differently.

In brief: Either one, or both.

When one has psoriasis on the skin, they can also have it in the nails.
This is known as psoriatic nails. To complicate matters, one can also have a fungal infection involving the nail at the same time. This is called onycomycosis. So, as a result, you can have either condition, separately, or both, together. By nail appearance, both conditions can look very much alike, but treated differently.
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