Early diagnosis of mucopolysaccharidosis (MPS) is important because it allows treatment and supportive care to begin before significant, potentially irreversible organ damage occurs. MPS is a group of inherited metabolic disorders in which a deficiency of specific enzymes causes glycosaminoglycans (GAGs) to accumulate in cells and tissues.

1. Early Treatment Can Improve Outcomes
Some treatments, including enzyme replacement therapy (ERT) and haematopoietic stem cell transplantation (HSCT) for selected patients, can improve outcomes. Treatment is often more beneficial when started early, depending on the MPS type.

2. Preventing or Managing Organ Complications
Early diagnosis helps doctors monitor and manage complications affecting the heart, lungs, liver, bones, joints, hearing, and vision. Although not all complications can be prevented, timely intervention can improve health and quality of life.

3. Protecting Development and Cognitive Function
Some MPS types, particularly severe MPS I and MPS II, can cause progressive neurological involvement. In selected children with severe MPS I, early HSCT may help preserve cognitive function. Early recognition of developmental changes also supports timely intervention.

4. Access to Appropriate Treatment and Specialist Care
A confirmed diagnosis helps healthcare professionals develop an individualised management plan involving clinical geneticists, paediatricians, cardiologists, orthopaedic specialists, and other healthcare professionals as needed.

5. Genetic Counselling and Family Planning
MPS is usually inherited in an autosomal recessive pattern, except MPS II, which is typically X-linked. Genetic counselling can help families understand inheritance, recurrence risks, carrier testing, and reproductive options.

6. Avoiding Diagnostic Delays
Early identification of symptoms such as unexplained hernias, recurrent respiratory infections, skeletal abnormalities, joint stiffness, or developmental delays can prompt appropriate biochemical and genetic investigations.