To determine if it's paronychia, first there will be obvious swelling, pain around the nail, and sometimes exudation. Paronychia is usually caused by the penetration of a foreign object under the nail, or by trimming the nails too short. If the nails are trimmed irregularly and become embedded in the nail bed, this can also lead to paronychia. If there is obvious swelling, pain, and tenderness around the nail, paronychia should be considered. Paronychia is usually related to ingrown nails. For mild ingrown nails, topical application of iodine can gradually alleviate the paronychia. In cases of severe paronychia, it is necessary to visit a hospital where a doctor can perform a nail removal and also change dressings timely. Significant pain may require oral antibiotics treatment or intravenous antibiotics. During treatment, avoid alcohol and spicy, irritating foods.