How I got addicted
About 15 years ago I started to develop leg pains. I sought medical help and after much investigation the doctors could not diagnose the cause. In the early years with this developing pain I started taking the over-the-counter paracetamol as a reasonably effective pain-killer but I became tolerant of the paracetamol and the pain developed to the point I needed to find something else for relief. Doctors suggested various drugs and even acupuncture without success.
About 6 years ago my doctor started me on prescription pain-killers, where each tablet contains 500 mg paracetamol with 30 mg of codeine. Codeine is an opiate, a morphine derivative; it, in fact, is converted to morphine by the liver. Codeine is a drug of dependency, but no doctor told me about the downside of taking this medication long-term. More on that later.
Initially I’d only take one or two tablets per day and it was reasonably effective. Also I took up walking a lot as that seemed to alleviate that pain, while I was walking at least. But as time passed the effectiveness of the codeine reduced and I increased the number of pills per day. By 2014 I was taking 4 per day and by 2016 it was 6 per day and even some times 8 pills.
In 2013 a new doctor diagnosed the cause of the pain as peripheral neuropathy resulting from untreated coeliac disease, which I have apparently had my whole life but only started to manifest symptoms about 15 years ago. About 6 years ago I was formally diagnosed with coeliac disease and have been on a gluten-free diet ever since. But the damage to my nerve fibres was done and I was told I could only mask the symptoms with strong pain-killers.
For the most part I was able to manage with the daily pain and some relief using the codeine pills. However in the last 4 years there were times where I started to develop unexplained symptoms like headaches, digestive problems (even though on a strict gluten-free diet) and a very unwell feeling, but they would come and go.
Pain goes to my head
Then on my last trip to Japan in March/April 2017 I started to feel ill almost daily, and by early April headaches started to develop. I developed not only what you would call tension headaches but something like ‘brain fog’, which was very disconcerting. I noticed myself taking the codeine pills just to try to relieve those bad headaches. The headaches developed into migraines and it became difficult to do my job there, working at a national research facility AIST in Tsukuba.