[Are the left-handed more often allergic?]

Are left handed more frequently allergic patients? With the same evaluation clinical criteria, we find a Non Right Handedness (left handed + mixed handedness) in 48/403 children (11.9%) at school in a town near our consultation place and in 152/625 (24.32%) children of the same age with a mites allergy (p less than 0.001). This non right handedness is among allergic patients more frequently observed for boys: 126/442 (28.50%) than for girls: 26/183 (14.20%). The mechanism is unknown but it has been hypothesized (Geschwind) that a male related factor might slow left hemisphere development and trouble immune system equilibration.