What are the differences between giant axonal neuropathy and gigantism?

Big difference: Gigantism is due to excessive secretion of growth hormone prior to closure of the epiphyseal plates. Giant axonal neuropathy is a rare autosomal recessive disorder of nerve cell protein that causes peripheral nervous system dysfunction in infancy and progresses to involve hearing vision, and eventually higher cortical function. One sees seizures and kinky hair in most cases.