Guillain-Barré Syndrome (GBS) most commonly occurs in children between the ages of 4 and 8 years, though it can affect individuals as young as 1 year old.
While GBS can affect people of any age, the peak incidence in children appears to be in this preschool and early school-age range. Keep in mind that this is an average, and individual cases can fall outside of this range.
It's important to remember that GBS is a relatively rare condition, and its occurrence isn't strictly limited to a specific age. If you suspect GBS in yourself or someone else, seeking prompt medical attention is crucial for diagnosis and treatment.