From the outside, David Aitken never appeared to be ill from his diabetes.
Even when he was diagnosed - aged just 12 - his only symptom was thirst. But three weeks short of his 20th birthday, a complication of the condition suddenly claimed his life.
For his parents Zoe and Gary, who were travelling home from a holiday in March last year when they learned of David's death, the news was unfathomable. The day before, David had spoken on the phone about a possible stomach bug but reassured his parents that his blood sugar levels had been "fine all day", Wales Online reports.
