A diode laser system was used to treat 17 patients with nail disorders: nine patients with chronic paronychia and eight patients with ingrown toenails (onychocryptosis). Stage I ingrown toenails (according to Zaias N classification) or subcutaneous ingrown toenails (according to Baran R & Dawber RPR classification) was treated with LLLT. The laser system emitted a continuous wave beam of 150 mW at 830 nm in the near infrared on a small round spot of about 1 cm in diameter, delivering an incident dose of about 45 J/cm2 per spot. The laser beam was applied to six points on the fingers of patients with chronic paronychia and to fifteen points on the fingers of patients with ingrown toenails for fifteen seconds per point. The effect was evaluated and reported by the patients themselves based on clinical findings on a scale from zero to ten.
Scores based on the results obtained:
For paronychia, 3 subjects reported scores that were excellent, 5 good and 1 sufficient. For the ingrown toenail, 5 subjects reported scores that were excellent, 2 good and 1 sufficient. Therefore, 88% of patients proved satisfied with the treatment at the end of the cycle of sessions. After about 5±4 sessions of LLLT (2 to 14 days) the symptoms improved satisfactorily in most cases. For this reason, LLLT can be a valid tool for the treatment of patients with ingrown toenails in the initial stages, especially for its non-invasiveness, for the absence of pain, because it is well tolerated and for the absence of side effects.