So my sister who is 46 has had a couple of brain scans done cuz she's been complaining of memory lapses, concentration lapses, fatigue. Our dad's mum had Alzheimer's and my dad complained of memory loss in the few years before he died of cancer. (His brother also died of Alzheimer's, so its in the family blood).
So my sister's been worried. And rightfully so, because the results show a (paraphrasing) contraction of the brain, and brain matter loss well beyond normal for a person of her age.
Her doctors say it could be:
Lupus
Lyme's disease
Multiple Scelorosis
Alzheimer's
So, the first two are treatable, but still a struggle, the second two pretty devastating. She's getting bloodwork over the next month and should know what it is by New Years'.
It's really scary, TBH, and I am heartbroken that she has to deal with this, because she is just starting to make some real strides in her writing, but she hasn't written anything recently because she can't focus.
****.