She created an online forum where young people could share their experiences and advice, helping lift the lid on the number of young people suffering from a condition, usually thought to affect older people.
Miss Clark said the award would help her reach a completely new demographic.
"People came up to me on the night and said they didn't even realise that young people get MSDs. There were local body government [people] there and hopefully more realise that people with MSDs do need support."
Semi-finalists for the 2013 New Zealander of the Year will be announced on December 10 and a gala awards presentation will take place in February.