The nail matrix is found on the deep surface of the nails of the fingers and toes. The onychomastoid is a special type of ingrowing epithelial tissue that produces a fully keratinized, multilayered cuticle plate, also known as the finger (toe) nail. In other words, the nail matrix is the source of the finger (toenail) and when it is destroyed, the finger (toenail) will not grow. Common diseases of the nail matrix include onychomycetoma, which mainly manifests as limited or diffuse thickening of the finger (toe) nails, sometimes accompanied by lateral overcurvature of the nail plate, and the thickened nail plate may turn yellow, and the specific manifestation is the cavitation of the free edge of the nail plate. Its performance with nail fungal disease is very similar, easy to misdiagnose as onychomycosis, tissue biopsy pathology examination can be differentiated. In terms of treatment, onychomycosis is mainly treated by surgical resection of the diseased onychomycosis, with a good prognosis. If you have nail matrix lesions, please consult the hospital in time to avoid delaying your condition.