The response to Deana’s letter was better than she could have hoped for when the postman delivered over a hundred letters from people who also lived with Addison’s.
She answered every letter by hand, asking if they would like to participate in a support group. Fifty people chose to join, and the Addison's Disease Self-Help Group was born. Deana carried on doing everything in pen and ink at her dining room table until Christmas, when her Mum bought her a typewriter. Her lifetime friend, Lynda Harris, was a Lioness (a female member of the charitable Lions Club) and, the following year, Lynda’s branch of the Lions Club presented Deana with a word processor. In April 1992 Deana posted out the first ADSHG newsletter after obtaining the assistance of one of the leading adrenal specialists in the UK, Professor Mike Besser, to answer medical questions in the newsletters.

In 2001 Nick Willson was the first member to offer help and, over the coming years, his invaluable IT skills would prove pivotal in establishing the group’s website, forum and online presence. Another early member, Alan Lack, designed the group’s first logo with clasped hands for their headed notepaper. The logo went on to be developed to the one you see now, based on the shape of an adrenal gland.
Deana organised many meetings, initially in her home town of Guildford and then nationwide, where people with Addison’s, their friends and families could get together to share experiences. These were often augmented with the input of experienced endocrinologists and endocrine nurses and, in 2003, the Addison’s Clinical Advisory Panel, led by Professor John Wass, was formed.
In 2018, the charity appointed permanent staff, having previously been run entirely by volunteers, most of whom have Addison’s themselves. In 2019, with the assent of the Charity Commission, the ADSHG became a 