Post-coital tristess is a feeling of dissatisfaction that descends upon someone usually somewhere between five minutes and two hours after enaging in sexual intercourse. The phenomenon occurs more commonly in men. It can also involve feelings of anxiety.
Post-coital tristess has been widely observed. In some cases, doctors have attempted to treat the condition with antidepressants. Patients reported an improvement in the post-coital tristess, but also a lowered libido due to the antidepressants.