Koro is a psychological disorder characterized by an intense fear that one's genitals are retracting into the body, leading to the belief that they may disappear. This condition is often associated with anxiety and can cause significant distress for those affected. Koro is most commonly reported in certain cultures, particularly in parts of Southeast Asia. The disorder can manifest in both men and women, though it is more frequently observed in males. Symptoms may include panic, a sense of impending doom, and physical sensations of retraction. Treatment typically involves psychological support and addressing underlying anxiety issues.