Percentage of relapse or second episode in GBS
What percent of patients with GBS suffer a relapse or second episode?
Based on several series of Guillain Barre syndrome patients, the incidence of recurrence lies somewhere between 1% and 6%, and recurrences may occur months to years after the initial episode.
A recent study found that patients with Miller–Fisher syndrome, younger age, and milder disease were more likely to suffer a recurrence.
There also appeared to be a trend toward shorter intervals between subsequent episodes and a more severe deficit with each recurrence.