A term meaning too many fats, or lipids, in the circulating blood. Untreated or poorly treated diabetics don't metabolize fats properly, due to lack of enough insulin to do so. The symptom, or sign, that this process does not occur properly is hyperlipidemia.
With regard to hyperlipidemia caused by untreated/poorly treated diabetes, the symptom should resolve after proper treatment which provides sufficient insulin for a normal metabolic process.
There are other causes for hyperlipidemia which are not diabetes-related; poor diet is one. In this case, sufficient insulin is not the answer--changing food choices is.
Hyperlipidemia is associated with diabetes,  pancreatitis,  Cushing's disease, and hypothyroidism, among others.  This 2004 ACVIM Abstract (#216)  suggests a strong association between hyperlipidemia and hypothyroidism in dogs. Hyperlipidemia can also be the cause of some eye problems.
Also see triglycerides.
- ↑ Herrtage, Michael (2009). New Strategies in the Management of Canine Diabetes Mellitus. WSAVA.
- ↑ Isabelle C. Jeusette, DVM; Estelle T. Lhoest, DVM; Louis P. Istasse, DVM, PhD; Marianne O. Diez, DVM, PhD (2005). Influence of obesity on plasma lipid and lipoprotein concentrations in dogs. AVJR.
- ↑ Greco, Deborah (2009). Dietary Treatment of Diabetes Mellitus in Dogs and Cats-Hyperlipidemia. DVM 360.
- ↑ Abstract #216-Association Between Hyperlipidemia & Hypothyroid in Dogs-page 81. ACVIM (2004).
- ↑ Plummer, Caryn E., Specht, Andrew, Gelatt, Kirk N. (December 2007). Ocular Manifestations of Endocrine Disease. Compendium.
- Canine Hyperlipidemia Weir.net
- A Nutritional Approach to Control Hyperlipidemia in Dogs Diez M., Grauwels M., Jeusette I., Tonglet C., Istasse L., 2001, WSAVA
- Hyperlipidemia in Dogs & Cats Jones. Boyd R., 2003, WSAVA
- Metabolic Syndrome and Dyslipidemia in Dogs Jericó, Márcia Marques, 2009, WSAVA
- Hypothyroid Caused Hyperlipidemia NAVC November 2006