Scores of shoes have been laid at the steps of Stormont to represent the hidden pain of people with chronic fatigue syndrome (CFS).
The rows of empty shoes are part of the Missing Millions protest, which aims to highlight the lack of funding and support for research into the causes of CFS, which is also known as myalgic encephalopathy, or just ME.
Each pair of shoes had a label giving the name of the shoes' owners, along with details of their condition.
Ulster Unionist health spokeswoman Jo-Anne Dobson MLA hosted the campaign.
She said: "The sheer passion and drive of campaigners on display today at Stormont must be met by real and positive change in the treatment of thousands of patients across Northern Ireland."