Toe nail seam hair is rotten, crus itches, be beriberi too serious

According to your description, your symptoms do not exclude lesions caused by beriberi, but may also be caused by local infection. If beriberi is caused by erosive exudation, you can take oral antifungal drugs, such as itraconazole, topical application of 3% boric acid solution wet compress, wait for local drying and then apply naftifine ketoconazole cream treatment.