I also asked that people vote based on which response is most accurate, most of the time. If someone is a bit upset from time to time, but generally not depressed, then they don't have depression and the answer would be "no".
Fair enough.
I can't speak for everyone of course, but I find the stigma accusations to be quite bizarre.
The stigma issue with mental health is a very real one, that affects lots of people, even though it shouldn't be this way. See this survey, for example:
BBC News - Survey reveals prevalence of mental health stigma, which found that 47% of people would not want anyone to know if they were suffering from a mental health problem.
Having been hit myself by multiple nasty mental heath problems, both before and after coming down with ME/CFS, I am very much aware of this mental health stigma. I was in both self-denial about these mental heath conditions I had, as well as denying them to others who suggested that I might be having some trouble. When you were once a mentally healthy and competent person, you don't want to admit to yourself, or to anyone else, that this is no longer the case. Your whole ego and self-image are at stake. If you are fortunate enough to have never been in this situation, it may be hard to understand why there is this stigma to admitting and talking about your mental health conditions.
Now after many years, I am reconciled with the fact that I have these various mental health conditions, so I am not too concerned with the stigma. But that may be to do with the fact that at one stage, for a few years, these mental health issues became so severe (not to mention indescribably hellish), that it was impossible to deny them to myself, or to others. Just getting through each new day of mental torture was my only concern. Thankfully those really hellish years appear to be over.
In the UK some years ago, there was a phase were famous people with mental health disorders were encouraged to talk about their mental health issues on TV, in an attempt to de-stigmatize mental health, and bring the issues out in the open.
Getting celebrities to do this works well, I think, because the general public often look up to celebrities as people who are perfect and/or successful individuals, so when these people intimately expose their mental issues, their skeletons in the closet, it helps greatly to de-stimgatise mental health. I remember one TV program in which Stephen Fry talked very frankly, eloquently and openly about his bipolar disorder, and how badly this affected his life. For me that program had a powerful influence. Such things help defuse the stigma of mental health problems.
I'd counter that depression is not a particularly widespread problem for ME/CFS patients, especially when compared to other chronic multi-system illness.
I agree, I would expect that only a minority of ME/CFS patients will have depression.
Though I would expect the majority of ME/CFS patients to have at least one comorbid mental health condition.
Some studies have shown that, across the entire board of mental health conditions, around two-thirds of ME/CFS patients have some kind of mental health condition, whether it is major depression, dysthymia, dysphoria, bipolar, seasonal affective disorder, generalized anxiety disorder, panic disorder, OCD, social anxiety, psychosis, anhedonia, depersonalization, derealization, etc.
There are two dangers to accepting their assertion of near-universal depression in ME. The first has been mentioned by others: ME patients end up being treated for depression while having their biological symptoms ignored. The second risk is that ME patients with depression will ignore it, or have it ignored by doctors, as "just another ME symptom", instead of getting the help necessary for coping with such a serious problem.
I am certainly not sugggesting that there is near-universal depression in ME/CFS. I would expect only a smallish fraction of ME/CFS patients to have comorbid depression. Though I would expect around the two-thirds mark to have at least one mental health condition of some sort.
Emotional sadness and depressed mood from life circumstances is not the same as the bad chemical trip an imbalance in the body can cause. English does not differentiate between the two. I do not believe "depression is depression" regardless of the cause. My experience with it was vastly different depending on circumstances.
As
@Bananas points out in the post quoted below, life circumstances (environmental causes) may compound biochemical dysfunctions, which then together trigger depression.
I experienced this myself once, decades ago, when a very bad set of life circumstances hit me precisely during the one month in winter in which my regular seasonal affective disorder (SAD) depression is always at its worst. This combination of bad life circumstances + the SAD biochemical dysfunction then triggered full clinical depression, which took me about 2 years to recover from.
The grey area comes where the environmental causes may trigger the internal factors, or vice versa, and create a downward spiral, and the essential question is whether sufficient environmental causes could tip someone into having internal causes - could poverty and loneliness and continued ill-health give someone clinical depression? bi-polar? marginal personality disorder? or any of the other conditions of which depression is a feature?
Absolutely.