A large piece of white toenail is considered to be related to nail trauma, onychomycosis, lichen planus and so on.
1. Nail trauma: when the toenail suffers from trauma, it may be due to nail malnutrition and appear to have a large piece of white toenail phenomenon. Some patients may also have other symptoms such as turbidity, deformation, roughness, localized redness and swelling.
2. ringworm of the nail: ringworm of the nail is because the skin fungus invades the nail plate and under the nail caused by the patient’s nail plate can be manifested as cloudy, thickening, discoloration, atrophy, shedding, surface unevenness, etc., can also be manifested as a big piece of the toenail white. Some patients with onychomycosis have mild symptoms, but they can also show pain and bleeding under the nail.
3. Lichen planus: the cause of lichen planus is not yet clear, may be related to immune response, infection or other disease factors. Lichen planus may cause nail thinning, longitudinal cracking, surface roughness, peeling, with or without subnail hyperkeratosis, and may also be manifested as a large piece of white toenail.
It is recommended that the person with a large white toenail should consult a doctor in time, and follow the doctor’s instructions to standardize the treatment after clarifying the cause of the disease.