Nail care means the care of your fingernails and toenails. Poor nail care may lead to many nail problems. You should keep your nails clean and dry and cut to a length that helps keep bacteria and infectious organisms from collecting under the nails. Many authorities recommend that you cut your nails straight across with slight rounding at the tips. You should keep your nails free of snags and avoid nail-biting. You should consult a physician for ingrown toenails, nail changes, swelling, and pain.