MCADD is a rare genetic condition where a person has problems breaking down fat to use as an energy source.

This means that someone with MCADD can become very ill if their body's energy demands exceed their energy intake, such as during infections or vomiting illnesses when they're unable to eat.

Problems occur because fat is only partially broken down, which leads to a lack of energy and a build-up of harmful substances in the body

MCADD isa lifelong condition that's present from birth. It's estimated to affect up to1 in every 8,000 babies born in the UK and isusually picked up usingthe newborn blood spot test .

The full name for MCADD ismedium-chain acyl-CoA dehydrogenase deficiency.

This page covers:

Is MCADD serious?

Symptoms of MCADD

What causes MCADD?

How MCADD is inherited

Screening and testing for MCADD

How MCADD is treated

Medium-chain acyl-CoA dehydrogenase deficiency (MCADD)

Content supplied by the NHS Website

Medically Reviewed by a doctor on 28 Nov 2016