Insomnia can definitely be conquered with the right drug. (So what if a dependency ever develops? Diabetics are dependent on insulin. Sleep matters)
Like you, I had serious sleep problems from a very early age (I’m 70 now) and over the years I’ve had periods (depending on the enlightenment of the GP) of blissful normal sleep, other times, self medication was my only recourse. Utter chaos, basically.
However, my present and I hope last doctor is fabulous, and explained long ago that my type of insomnia is surely rooted in a childhood anxiety disorder, which actually made perfect sense.
Anyway, she prescribed a medication which also happens to have a very powerful effect on social anxiety; quite astonishing. So as far as I’m concerned, I’m staying on this drug for good.
(I assume you'd have mentioned it had you ever been given it by the doc. Zopiclone hardly touched the sides, as they say. Nasty, filthy stuff anyway, and dangerous)
Insomnia should not be abandoned by your doctor, if it is true that nothing has helped. (Melatonin is useless for anxiety-rooted sleeplessness)
Her job is to help you. Does she know how distressed you are, and in all this detail you give here?
But I wanted to warn you about the way years of sleep deprivation causes serious personality and physical changes.
The latter is worth considering, since neurological conditions such as fibromyalgia, after sleep loss over decades, has many sensory characteristics you are listing as autism related.
Not saying you’ve fibro of course, not at all, but your senses could very well be far too surface level and raw if you really have had only 50% of required sleep for 20 years.
I took no notice and like you, shrugged and reckoned it was just my lot in life. I certainly paid the price by around my mid-fifties.
That shit does very serious damage, on every level
It’s all thoroughly entangled, and you’re fed up naturally. But my goodness, before leaping to any other diagnostic conclusions you need to see how you are after, say, six months of adequate sleep.
Nothing can be right with a person until that is addressed.
(Peri-menopause is nothing compared to being fucked up by long-term insomnia.)
There is no necessity to live this way, and I bloody wish I’d been serious about it at 30. My life would have been very different.
[Oh! And by the way. The medications you are hoping to acquire with your ADHD etc diagnosis are no friend to the insomniac. Speed famously works in the opposite direction!]