Approximately 50% of American marriages have some sexual dysfunction. Because sexuality is an important part of a person's life, counselors should be sensitive to sexual concerns of their clients. Taking an adequate sex history and highlighting problem areas may increase counseling efficiency. When counselors teach courses on human sexuality, they may note an increase in the number of subsequent clients presenting sexual problems. School counselors who provide an atmosphere conducive to sharing and exploration will have students seek them out for counseling about sexual matters. Several case studies are described which focus on typical presenting problems: dyspareunia, difficulty in becoming pregnant, homosexuality, impotency and orgasmic concerns. Additionally, a listing is included which suggests some of those symptoms of sexual abuse to which counselors should be sensitive. (Author/NRB)