Within the group of patients with syringomyelia (group A), IL-31 values did not differ significantly between the three subgroups A.1, A.2 and A.3 patients (p = .3151, Fig. 2) with highest IL-31 values in CSF measurable in patients with syringomyelia and additional otitis (group A.2). The gene discussed is IL31; the disease is syringomyelia.