Guide to Hereditary and Congenital Diseases in
Dogs
by W. Jean Dodds, DVM
Subject:  Rhodesian Ridgeback
42. Cataract: as in humans, a change in structure of the lens of the eye leading to cloudiness and   
usually to blindness.

45. Cerebellar cortical abiotrophy: malformation of the neurons in the cerebellum, a part of the   
brain.

51. Cervical vertebral malformation or instability: a malformation of the vertebrae in the neck usually
leading to nerve damage. Commonly seen in Doberman pinschers and causes a hackneyed gait (high
stepping).

84. Dermoid sinus: similar to a dermoid cyst but usually larger. Seen in Rhodesian ridgebacks.

103. Entropion: an abnormal rolling in of the eyelid.

152. Hip dysplasia: a developmental malformation or subluxation of the hip joints.

166. Hypothyroidism: a common endocrine disease where the body produces an abnormally low amount
of thyroid hormones. An autoimmune destruction of the thyroid gland which affects more than 50 dog
breeds.

221. Osteochondritis dissecans: a specific form of inflammation of the cartilage of certain joints which
causes arthritis.

221a. Osteochondrosis: a group of developmental diseases resulting in abnormal formulation of joint
cartilage. Commonly involves the shoulder, stifle, hock or elbow.

245. Persistent pupillary membrane: a developmental abnormality where the membrane forming the iris
does not form properly.

256. Progressive retinal atrophy: a disease where the retina slowly deteriorates, producing night
blindness.
Ridgebacks
by Kat