My Child Was Just Diagnosed with Refsum Disease: A Parent's Guide
Dear Parent,
Right now, your world might feel like it's been turned upside down. Receiving a diagnosis like Refsum Disease for your child can bring a wave of emotions – shock, fear, confusion, grief, and an overwhelming desire to understand everything. Please know that what you're feeling is completely normal. Take a deep breath. You are not alone, and there are many resources and people ready to support you and your family on this journey. This guide is here to help you begin to understand Refsum Disease and what steps you can take for your child.
What is Refsum Disease?
Refsum Disease is a very rare, inherited metabolic disorder. In simple terms, it means your child's body has trouble processing a specific type of fat called phytanic acid. This acid is found in certain foods and usually, our bodies have an enzyme that breaks it down. In Refsum Disease, that enzyme isn't working correctly, or is missing. As a result, phytanic acid builds up in various tissues and organs throughout the body, including the eyes, nervous system, skin, and bones.
This buildup of phytanic acid is what causes the symptoms associated with Refsum Disease. It's considered a "peroxisomal disorder" because the problem lies within the peroxisomes, which are tiny compartments within our cells responsible for breaking down certain substances. Because it affects multiple body systems, it's also known as a "syndromic inherited retinal disease."
How Will This Affect My Child?
Refsum Disease is progressive, meaning symptoms tend to develop and worsen over time. The age of onset can vary widely, from as early as 7 months to over 50 years, but it most commonly begins to show symptoms in late childhood to early adulthood, typically between 10 and 20 years of age.
One of the most significant impacts is on vision. Your child may develop a type of inherited retinal disease called retinitis pigmentosa (RP). This often starts with night blindness, making it hard to see in dim light or at dusk. Over time, it can lead to a gradual loss of peripheral (side) vision, creating