Bipolar is a mood disorder, it does not have to be there when one is a child, teenage or young adult. Like all mood disorder Bipolar can appear at any age (it is personality disorders that show when one is a child, teenager or young adult). This said, my very wallower cousin, when he had his MLC, was diagnosed with everything from schizophrenia to psychotic passing to borderline. Then, when my cousin hit rock bottom, my friend who is a psychiatrist said he could be bipolar. Could be. If he would not react to treatment within two years and after treatment keep having mania and depression episodes, bipolar would be it. Within two years he was much better and even if he has not fully returned to his older self, he is not bipolar.
Doctors can have a hard time separating MLC from other mental/neurological disorders. By the way, here, in my town Faculty of Medicine they have mental illness under neurosciences. The department is called Departamento de Neurociências Clínicas e Saúde Mental – Clinical Neuroscience and Mental Health Department. They use both and they know mental illness is in the brain, therefore it is part of neuroscience. Of course that then they have subdivision, like psychiatry and neurology, but the first is part of the second.
I don't know Moment. Do you think mental illness, or neurological illness, or addiction, is just an excuse for bad behaviour? Do you know/understand the mechanism at work in those conditions and what they do to brain and body? Mental illness, neurological illness, addiction had nothing to do with character. It has to do with the way body and brain are wired and/or the alterations they suffered. Of course mental illness, neurological illness and addiction alter character. They tamper everything inside a person.
Is it an excuse? No, it is a cause. There is a difference. Paedophilia is a neurological disorder. It has to do with a wrong wiring of brain circuits. Does it excuse the behaviour? No, but it explains it, those who suffer from it cannot (until science is more advanced) revert their brains wrong wiring.
They make a choice. Or did they? They way I see it is, they are depressed. Depression alters perception and reality, sometimes to the point of leading something to take their own life. MLCer get OW/OM (or any other thing that provide a high): The high makes them feel good (for a while), but it also changes their brains. Next thing they know they are addict to the high. From then on it is like all other addiction, including nicotine or caffeine.
For me it is stress, the imbalanced hormone cortisol, that leads to the mania, replay, MLC. Add to hit the rush of adrenaline (and people do get addict to adrenaline) provided by OW/OM or their drug of choice, add further, now all levels, hormonal, brain chemicals as well as the brain electric part is becoming unbalanced. And there are also those who may have thyroid problems (thyroid issues can also have mania), low testosterone, and we are dealing with a lethal cocktail of madness.
Also, don't forget many MLCer start to use alcohol (or other drugs, but alcohol seems to be the main one). Alcohol provokes all sorts of damages and changes in brain and body as well as in personality.
In my current course we are learning the effects of drugs and alcohol (who is also a drug but tends to be separate from the other ones) on brain, body and personality. Especially on older adults and well as in adults over 40. It is not pretty.
Sometimes good things fall apart so better things can fall together. (Marilyn Monroe)