A rechargeable battery operated hand-held light emitting device that will treat the symptoms of common onychomycosis. The device preferably is operated utilizing a flash lamp of as the source of energy, a reflector and special window filter limiting the wavelength output to the narrow band range of 900-1100 nm. This will optimize the absorption of light energy in the nail bed, and thus increase the temperature of the nail bed to a efficacious level, by and while transmitting the optical light energy through the nail. The targeted tissue is located below the nail and is heated by a series of flashes in a sequential release of energy. A disposable treatment tip can be attached to the hand-held device to ensure safety in form of tissue contact and providing user safety.
