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Ingrown toenail in Adult
See also in: Nail and Distal Digit
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Ingrown toenail in Adult

See also in: Nail and Distal Digit
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Contributors: Shari Lipner MD, PhD, Bertrand Richert MD, Robert Baran MD, Susan Burgin MD
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Synopsis

Ingrown toenails (onychocryptosis) are common nail complaints and may occur at any age. They result from the penetration of the nail plate into the skin. There are 2 types of ingrown toenails: lateral and distal.

Lateral ingrown toenails are the most common type, especially in children and young adults. The nail becomes embedded into one or both lateral nail folds, with a nail spicule that breaks the epidermis of the lateral groove with subsequent inflammatory reaction and pain. Cutting the spicule aggravates the condition by causing a new, more proximal spicule to form. In time, granulation tissue may develop with concomitant oozing, bleeding, and secondary infection. The condition may be precipitated by improper nail cutting, plantar hyperhidrosis, trauma, and anatomical foot abnormalities.

The second, and much less common, type of ingrown toenail occurs distally. Normally, there is a natural counter pressure from the nail plate to the underlying tissue. Nail plate avulsion or traumatic nail shedding cause a loss of counter pressure, causing a bulbous extremity. The newly formed nail abuts this distal wall, which interferes with its normal growth. A deep transversal horn fills the distal groove and results in the ingrown nail and pain.

Codes

ICD10CM:
L60.0 – Ingrowing nail

SNOMEDCT:
400200009 – Ingrown toenail

Look For

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

Best Tests

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Management Pearls

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Therapy

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Drug Reaction Data

Below is a list of drugs with literature evidence indicating an adverse association with this diagnosis. The list is continually updated through ongoing research and new medication approvals. Click on Citations to sort by number of citations or click on Medication to sort the medications alphabetically.

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References

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Last Reviewed: 04/10/2017
Last Updated: 10/31/2017
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Ingrown toenail in Adult
See also in: Nail and Distal Digit
Print 12 Images
View all Images (12)
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Ingrown toenail : Nail fold erythema and edema, Periungual toes, Solitary nail or digit, Toe pain
Clinical image of Ingrown toenail
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