Chronic stress, or a constant stress experienced over a prolonged period of time, can contribute to long-term problems for heart and blood vessels. The consistent and ongoing increase in heart rate, and the elevated levels of stress hormones and of blood pressure, can take a toll on the body.
Excess Tearing. The most common cause of tear stains in dogs is excess tearing or epiphora, which makes the hair and skin around the eyes damp. This can lead to the growth of bacteria and yeast. Red yeast, which produces a reddish brown discoloration of the face, is a common cause of tear stain problems.
Tear Duct Infection Causes. Some of the main causes of Tear Duct Infection are. Bacterial infection of the tear duct; Nasal Polyps or any other obstruction near the nose; Nasal or Sinus Infection (Particularly Chronic Nasal Infection) Injury to the eye; Infection of the eye, such as Conjunctivitis (Pink Eye Infection) Fracture of the facial or nasal bones