What can you do the ease the external symptoms left over from a yeast infection after the internal infection has already cleared?

Hmm.... confusing question. The main symptoms of vaginal yeast infection are external, i.e. vulvar itching and irritation. Maybe you mean discharge is less, but still feeling irritated? If so, the infection has not been cured and you may need a different treatment entirely. Or maybe it's just too soon; it can take a week for symptoms to clear up entirely. Discuss with your doctor or clinic.