RTN4 and Behcet disease: In conclusion, this study demonstrated that BD ameliorated modified mNSS, limb spasticity, and motor function in rats with PSS by increasing PSD thickness and length; narrowing synaptic clefts; and downregulating the synaptic‐plasticity‐related proteins Nogo‐A, NgR, RhoA, AGG, and CRMP2 in peri‐infarct brain tissue.