Common Variable Immunodeficiency (CVID) is a heterogeneous group of diseases progressing with recurrent infections. This disease should be considered in cases experiencing recurrent lung infection, otitis media, rhinosinusitis, and urinary tract infection. Since it is generally seen in the childhood age group, the diagnosis in adults may be delayed. A Common Variable Immunodeficiency case, which was followed up in our clinic and characterized by recurrent upper respiratory tract infection and pneumonia, was presented to raise awareness on this issue. CVID should be kept in mind in patients who are admitted to outpatient clinics with recurrent infections, who do not respond despite appropriate treatments, and who develop complications.