Venereal diseases, also known as sexually transmitted infections (STIs), are infections that are primarily spread through sexual contact. Common examples include chlamydia, gonorrhea, syphilis, and human immunodeficiency virus (HIV). These infections can affect anyone who is sexually active, regardless of age or gender, and can lead to serious health complications if left untreated. Symptoms of venereal diseases can vary widely, ranging from mild to severe. Some individuals may experience no symptoms at all, while others may notice unusual discharge, pain during urination, or sores. Regular testing and safe sex practices, such as using condoms, are essential for prevention and early detection of these infections.