Testosterone also affects various other tissues in the male. Testosterone
causes pubic and underarm hair growth, causes changes in body propor-
tions, increases muscle tissue, and deepens the voice. Testosterone may
inﬂuence the development of acne and the beginning of body odors from
bacteria attracted to sweat glands. Because none of these characteristics
are directly related to sexual reproduction, they are called secondary sex
characteristics. In males, the level of testosterone in the body remains
much the same for about 40 years after puberty.
Leukorrhea is a usually whitish vaginal discharge that may occur at any age and affects virtually all women at some time. Although some vaginal discharge (mucus) is physiologic and nearly always present, when it becomes greater or abnormal (bloody or soils clothing), is irritating, or has an offensive odor, it is considered pathologic. Pathologic discharge is often coupled with vulvar irritation. Commonly, the pathologic conditions are due to infection of the vagina or cervix.