The Common Cold: A Comprehensive Review

Background: The common cold, also known as an upper respiratory tract infection (URI), is a self-limited viral illness that primarily affects the nasal mucosa and pharynx, and occasionally extends to the lower respiratory tract. It is characterized by symptoms such as rhinorrhoea, nasal congestion, sneezing, sore throat, cough, and mild constitutional manifestations including low-grade fever and malaise. The common cold is the most prevalent human illness worldwide and represents a significant public health burden due to its high incidence, associated healthcare costs, and considerable absenteeism from schools and workplaces. More than 200 antigenically distinct viruses are implicated in its etiology, with rhinoviruses accounting for the majority of cases, followed by coronaviruses, adenoviruses, respiratory syncytial virus, and parainfluenza viruses. Objective: This review aims to provide a comprehensive overview of the common cold, encompassing its epidemiology, etiology, pathophysiology, clinical manifestations, diagnostic considerations, current management approaches, and preventive strategies, while highlighting gaps in existing therapeutic options and areas for future research Conclusion: The intricate interplay between viral factors, host immune responses, and environmental influences that contribute to the recurrent nature of the common cold is explored. Despite extensive research, no antiviral drugs effectively treat the common cold, though symptomatic relief may be provided by certain medications like first-generation antihistamines.