lol
but there are psychological disorders in which a man/woman has a tendency to only care about/spot one half of an object and thus their interactions with said object can differ greatly from the norm
There's an significant overlap with psychology and neurology, properly speaking a
neuropsychologist or
neuropsychiatrist would actually handle most of the cases. Prof. Oliver Sacks (professor of psychiatry and neurology) was the first to document this phenomenon in detail in his memoirs of patients with right-sided neurological deficits, the essence of the accounts can be found in his book
The Man Who Mistook His Wife For a Hat. In fact if you do read the chapter on hemineglect, you'll find that my poem is actually based on that exact case study, as Prof. Sacks described the lady's manner of eating pies. She may have
seen the whole pie, but she only
perceived half of it, just as she only perceived half of everything else, which meant that she literally applied makeup to half her face, dressed half her body etc.
I have seen patients like these on neurology wards, and because they have no concept of one half of everything all the inconveniences and dysfunctions that follow kinda just get shrugged off like "oh that's strange but I have no idea why that happens." If you tell them "you're not processing one half of everything you see," they'll look at you confused because that's certainly not how it feels to them!
Frank, you probably wouldn't have recognised the latter poem as it's primarily neurological and only neurologists look after the primary disorder. Rehabilitation physicians look after all the secondary effects.
Multiple sclerosis is a progressive (to varying degrees) demyelinating disorder of the central nervous system. It's defined and diagnosed by a combination of clinical manifestations but importantly on imaging of the brain, strictly "at least two lesions disseminated in space and time". The lesions typically appear as hyperintensities on T1-weighted images and come and go in various places (hence the first few lines).
Onset and course varies, as does presentation and prognosis. The experience varies hugely, but the most common symptoms are eye pain and blurring of vision, muscular pains, numbness and weakness, heat intolerance, fatigue, alterations to bowel and bladder function, altered memory and cognition, and depression. We don't have any curative treatment, only treatment that modestly prolongs functioning, and rehabilitation, because ultimately, most people with MS end up completely unable to live independently. This, and glioblastoma multiforme, are among the most frustrating of CNS conditions because we don't entirely understand and can't do very much about either, the main difference being that GBM generally kills you in weeks to months.