Dengue fever, caused by the dengue virus transmitted primarily by Aedes mosquitoes, is a significant global health concern. The infection is prevalent in tropical and subtropical regions, placing over half the world's population at risk. Dengue manifests in a spectrum of clinical presentations, ranging from asymptomatic cases to severe forms, including dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS). Common symptoms include sudden high fever, severe headaches, joint and muscle pain, skin rash, and mild bleeding tendencies. Severe forms of dengue can lead to plasma leakage, organ impairment, and, in extreme cases, death. The rapid urbanization and increased travel contribute to the virus's global spread. Diagnosis relies on clinical evaluation, supported by laboratory tests such as polymerase chain reaction (PCR) and serological assays. Management involves supportive care, as no specific antiviral treatment is available. Vector control measures and public health campaigns are crucial for preventing dengue transmission.