Rosa Nakamura can tell you the exact moment she realised she had been managing a condition she could not see. It was a Tuesday, and the small sensor on her arm was telling her something her body was not.

The fix, when it came, was unglamorous. One dose moved. One meal moved earlier. That was most of it, and it had been available the whole time.

The review in the spring moved contact from fortnightly to monthly — the first time in three years that the frequency of appointments had gone down rather than up.

An average can look excellent and hide a week of chaos inside it. Rosa’s did.

Illustrative composite

The first six weeks changed nothing about the medication. They were spent, instead, watching — a reading logged every few minutes and a diary that took about forty seconds a day to keep.

“I don’t want to make it sound solved,” she says. “It isn’t solved. But I’m doing the job with the lights on now.”