These problems may be one of the main reasons affecting one's normal life. Common sex problems in men are erectile dysfunction, inhibited ejaculation, retarded ejaculation, premature ejaculation, pain during intercourse and decreased libido. While females mostly suffer from lack of sexual desire, inability to reach climax (anorgasmia) and spasm in vagina during intercourse (vaginismus) vaginal bleeding etc. A sudden and long-lasting loss of interest in sex due to low testosterone levels, psychological or emotional issues, or a problem in your relationship. Various types of sex related disorders.