FIGURE 1 | (A) Compulsion position. Lower limb flexion due to severe spasms and pains, with painful spasms triggered by slight movements of the lower limbs. (B) When gazing forward, the right eyeball (red arrow) was abducted relative to the center of the left eyeball. (C) Hyperlordosis of the lumbar spine, without rigidity of the anterior abdominal and lumbar muscles.