Whooping cough can lead to several complications, particularly in infants and young children, who are more vulnerable to severe outcomes. These complications include pneumonia, seizures, encephalopathy, and, in severe cases, death. In adults, whooping cough can cause rib fractures due to intense coughing, weight loss, and urinary incontinence. The impact of these complications underscores the importance of early diagnosis, treatment, and prevention through vaccination.