Contents. 1  Muscle hypertonicity: Causes. 2  Muscle hypertonicity: Introduction. 3  Muscle hypertonicity: Add a 2nd Symptom. 4  Muscle hypertonicity and Body symptoms (5 causes) 5  Muscle hypertonicity and Breathing difficulties (5 causes) 6  Muscle hypertonicity and Hyperactive deep tendon reflexes (5 causes)
What is ectropion? Ectropion is an abnormality of the eyelids in which the lower eyelid rolls outward or is everted. This causes the lower eyelids to appear droopy. Ectropion exposes the delicate conjunctival tissues that line the inner surface of the eyelids and cover the eyeball, causing drying of the tissues, resulting in conjunctivitis.
Entropion is a genetic disorder that causes a dog's eyelids to roll inward at the edges. This disorder usually appears in puppies, though it can develop in older dogs as well. Breeds vulnerable to entropion include the Labrador Retriever, Chow Chow, English Bulldog, Irish setter, St. Bernard, Great Dane and Chinese Shar-Pei.