Delayed ejaculation is a medical condition in which a male is unable to ejaculate, either during intercourse or with manual stimulation in the presence of a partner. Ejaculation is the action in which semen is release from the penis.

Most men ejaculate within a few minutes after onset of active thrusting in intercourse. Men with delayed ejaculation may be entirely unable to ejaculate in some circumstances (for example, during intercourse), or may only be able to ejaculate with great effort and after prolonged intercourse (for example 30 to 45 minutes).

Delayed ejaculation can result from psychological or physical causes.

Common psychological causes include:

• A strict religious background causing the person to view sex as sinful
• Lack of attraction for a partner
• Conditioning caused by unique or atypical masturbation patterns
• Traumatic events (such as being discovered in masturbation or illicit sex, or learning one's partner is having an affair)

Some factors, such as anger toward the partner, may be involved.

Physical causes may include:

• Use of certain drugs (such as prozac, mellaril, and guanethidine)
• Neurological disease such as a stroke or nerve damage to the spinal cord or back