Effect of clothing on scrotal temperature in normal men and patients with poor semen.

Abstract Mean scrotal surface temperatures overlying the testis clothed and unclothed reaffirm a prior observation that patients with very low spermatozoa counts (⩽ 20 mil./ml.) have higher temperatures than subjects with high spermatozoa counts (% 100 mil./ml.). The insulating effect of clothing results in mean temperature rises of 1.2 to 1.5°C. over the unclothed state regardless of semen status. There were no differences in temperature rise between wearers of “jockey” versus “boxer” undershorts.