Nail side long small nails, may be related to nail trauma, nail fungus and other diseases, for trauma caused by nail side long small nails, generally do not need to carry out too much treatment; for nail fungus caused by the side long small nails, you need to choose antifungal medication. 1. Nail trauma: trauma to the nail plate or nail bed caused by a certain degree of damage, so that the growth of nails appear abnormal, including nail longitudinal cracks, damage to the site of small nails, nail deformation, etc., for this situation generally do not need to carry out too much treatment, with the growth of newborn nails, nails will gradually return to normal. 2. Ringworm: After the nail is infected with ringworm, the ringworm will cause damage to the nail plate, making the growth of the nail abnormal, in this case you need to choose effective antifungal treatment, such as topical amorphophallus application. For small nails growing on the outside of the nail, must avoid tearing, so as not to induce infection, if necessary, consult a doctor, follow the doctor’s instructions for medication.