OBSOLETE: Rare major hypertriglyceridemia

Rare major hypertriglyceridemia refers to a group of uncommon conditions in which the level of triglycerides (a type of fat) in the blood is very high. This Orphanet entry (181425) is now marked as obsolete, meaning it has been retired and replaced by more specific disease classifications. However, the underlying conditions it once grouped together are still very real and important. When triglyceride levels become extremely elevated — often above 1,000 mg/dL — the body struggles to process and clear fats from the bloodstream properly. This can happen because of genetic mutations that affect how the body breaks down or transports fats. The most serious risk of very high triglycerides is acute pancreatitis, a painful and potentially life-threatening inflammation of the pancreas. Other symptoms may include fatty deposits under the skin (xanthomas), an enlarged liver or spleen, and milky-appearing blood (lipemia). Some patients also develop early cardiovascular disease. Treatment typically involves a very strict low-fat diet, medications to lower triglycerides (such as fibrates and omega-3 fatty acids), and in some genetic forms, newer targeted therapies. Because this classification is obsolete, patients should work with their doctors to identify the specific underlying diagnosis, such as familial chylomicronemia syndrome (FCS) or familial hypertriglyceridemia, to receive the most appropriate care.

Bring these to your next appointment

• Q1.What is the specific genetic cause of my high triglycerides, and should I have genetic testing?,How low should my daily fat intake be, and can I work with a specialized dietitian?,What are the warning signs of pancreatitis that I should watch for?,Are there newer medications or clinical trials that might help me?,Should my family members be tested for this condition?,How often should I have my triglyceride levels checked?,What should I do if I accidentally eat a high-fat meal?

Common questions about OBSOLETE: Rare major hypertriglyceridemia