One in 17 New Zealanders have what's termed as a rare disorder. March is the month to highlight their lives and struggles.

March is Rare Disorder Month, where attention's drawn to the 300,000 New Zealanders who are uncommon, but who have a lot in common.

When Ursula Christel's son was diagnosed with Angelman syndrome, she felt relieved.

"I now had something in my toolbox that I knew how I could handle. I just had to research it, everything was step by step." she says.

Angelman syndrome affects about one in every 15,000 babies but the condition is a spectrum, and all 500,000 people globally who have it are affected differently.

"Not every person with Angelman syndrome might have severe seizures, or there might be some with very severe seizures, and then they live in the neurology department, whereas my son had a little bit of everything.

"I was flitting between all sorts of specialists." Christel explains.

With such an uncommon condition, it isn't really surprising that the internet is the main first choice of source for information about treatment, care and support.

Christel says social media has been a great way to connect with other families who have Angelman children, and share research and experiences.

Together they've become a community of experts, finding new information, and feeding it back to doctors here in Aotearoa.

"There are different ways you get Angelman syndrome, it's quite complex, the genetics. So I booked an appointment with the geneticist, and I took along all the information that I had, and afterwards we sat together, he listened to me a little bit and then he went online, and he started googling my website!

"And that's when I thought, okay you better know that that's my website... I actually know everything that's in there already, I came here because I wanted you to tell me something." she laughs.

Her son Andrew is one of about 300,000 New Zealanders living with at least one of the more than 7,000 known rare disorders.

It's not actually that rare to have a rare disorder.

But there's no official rare disorder register so it's difficult to know exactly how many people are actually affected. Chris Higgins, Chief Executive of Rare Disorders NZ, says they tend to be more conservative with their figures, and the number could actually be higher.

"The other thing that happens is that the number of rare disorders increases anyway as we understand that what we might have considered to be a common condition is actually made up of a number of sub-conditions, some of which will be rare."…

Go to this episode on rnz.co.nz for more details