Knowing what diseases are common in which
breeds, age or sex of animal can be of great benefit in producing a list of differential
There is a wide range of conditions that
show a definite age incidence.
Congenital diseases usually appear in
young animals, but it should be remembered that it is not uncommon for mildly
affected animals to live a normal life.
Respiratory tract infections tend to
be more common in young unvaccinated animals.
Dilated cardiomyopathy tends to occur
in middle-aged dogs, 3-7 years old, but younger and older animals may be affected.
Examples of diseases more common in older
animals include: valvular endocardiosis, chronic pulmonary interstitial disease,
pulmonary neoplasia, laryngeal paralysis, hyperthyroidism in cats and renal hypertension.
Diseases of the atrioventricular (AV)
valves (congenital dysplasia or endocardiosis) and idiopathic dilated cardiomyopathy
are more common in males.
Patent ductus arteriosus (PDA, 2:1) and
Addison's disease (hypoadrenocorticism) are seen more commonly in females.
Breed factors need to be considered, particularly
in cardiac diseases where there are numerous examples of breed-related problems.
Several respiratory conditions are also seen more frequently in particular breeds,
and details are given in the relevant section and
Back to top
Back to menu