Toenail thickening raised deformity may be due to nail dystrophy, onychomycosis, psoriasis and other diseases. 1. Nail dystrophy: the cause of nail dystrophy is related to heredity, eczema, pemphigus, frostbite, nail biting and other factors. Patients can appear toenail thickening, turbidity, friability, deformation and other symptoms, manifested as toenail thickening raised deformity. 2. Ringworm of the nail: the cause of ringworm of the nail is mostly caused by the skin ringworm infection, triggering factors may be nail trauma, wear impermeable shoes, local blood and other factors. Patients can appear nail plate turbidity, thickening, separation, warping and other symptoms, some patients can be manifested as toenail thickening raised deformity. 3. Psoriasis: the cause of psoriasis is not yet clear, and it may be caused by genetic and environmental factors. Symptoms of psoriasis include cloudy toenails, pus accumulation under the nails, etc., and some patients may have thickened and raised toenails with deformities. There are many reasons for the thickened and raised toenail deformity, and it is recommended that patients go to regular hospitals for relevant examinations to find out the cause of the disease.