Erythromycin ointment can be used for dog toe inflammation, but if it does not improve after use, or the toe inflammation is serious, it is best to take the dog to the pet hospital for examination and treatment to avoid delaying the condition. Dog toe inflammation is usually caused by parasitic infection or fungal bacterial infection. Redness and itchiness will occur. The dog will lick the toes frequently, so it is best to wear an Elizabethan collar on the dog.