How is Alport syndrome characterized?

• A. Cardiovascular, renal, ocular symptoms
• B. Ocular, respiratory, neurological symptoms
• C. Ocular, renal, sensorineural hearing loss
• D. Respiratory, endocrine, muscular symptoms

Answer: (C)

Alport syndrome is predominantly characterized by a triad of symptoms that includes ocular issues, renal complications, and sensorineural hearing loss. The key aspect of this condition is its impact on the various types of collagens, particularly type IV collagen, which affects the structure and function of the basement membranes in the eyes, kidneys, and ears.

In terms of ocular symptoms, individuals may experience lenticonus, retinal flecks, or other eye abnormalities. The renal manifestations typically involve hematuria (blood in urine) and proteinuria, which can progress to end-stage renal disease due to glomerulonephritis. Additionally, sensorineural hearing loss is a common feature of Alport syndrome, which arises due to cochlear damage affecting the auditory pathways.

The involvement of these three systems is a defining characteristic of Alport syndrome, making it crucial to recognize these symptoms for proper diagnosis and management.