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Living with Lysosomal acid lipase deficiency

An inherited condition in which fats and cholesterol build up in cells, usually causing liver disease, in an infant form and a milder later form.

Understanding Lysosomal acid lipase deficiency

Lysosomal acid lipase deficiency is an inherited condition with problems breaking down and using fats and cholesterol (lipid metabolism).

Harmful amounts of fats build up in cells and tissues, which typically causes liver disease. There are two forms. The rarest, most severe form begins in infancy. The milder form can begin anywhere from childhood to late adulthood. Infants may have an enlarged liver and spleen, poor weight gain, jaundice, vomiting, and diarrhea.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Enlarged liver and spleen
  • Belly pain and bloating
  • Diarrhea
  • Decreased liver function
  • Calcium deposits in the adrenal glands
  • Enlarged veins in the esophagus

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include digestive system specialists, genetic specialists and hormone specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Foundation of the National Lipid Association and LAL-D Aware may keep lists of experts for this condition.

Care & treatment

Care team
Digestive system specialists (gastroenterologists); Genetic specialists (geneticists); Hormone specialists (endocrinologists)
Expert care
Expert lists: Foundation of the National Lipid Association, LAL-D Aware
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Foundation of the National Lipid Association and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which form of the condition do I or my child have?
How often should the liver be checked?
Would genetic testing help our family?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Recessive

A child inherits a changed copy of the gene from each parent (autosomal recessive). GARD does not name a gene.

GeneticEndocrineGastrointestinalInherited MetabolicLysosomal Storage

Also known as: acid cholesteryl ester hydrolase deficiency, type 2; lal (lysosomal acid lipase) deficiency; lal deficiency; lald - lysosomal acid lipase deficiency

Patient organizations

Source: NIH GARD · Lysosomal acid lipase deficiencyGARD ID 12097 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Lysosomal acid lipase deficiency.

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