Sex differences in Pain showing 20% higher in Women than men, were reported  in the Jan 12 2012 Journal of Pain. Biological and psychological factors may explain the differences with pain including back, Leg, & Knee pain. Neck pain specifically was noted in this recent study to be  worse in women.
At Rosen and Associates,  Attorneys at Law , our female clients typically report great Neck pain and injury from similar car crashes then Men. Cash settlements  under the Law paid  by insurance companies must compensate accident victims for their honest pain, even if there gender as female increases their suffering compared to men.  California law specifically instructs Juries to award compensation for injuries  when the victims unique sensitivities produce more damages than another stronger person would have.