Sleep Apnea and Sleep Talking

I've done some (very limited) internet research on this "phenomenon".
I suppose little is understood, still, about it.
I'll tell you about my brother in law. I believe he has suffered for years with undiagnosed depression. His wife left him about 9 or 10 years ago because she just couldn't handle it/him.
About 7 or 8 years ago or so he worked for a LARGE Globally recognized company and had fantastic health insurance. He had began experiencing bouts of narcolepsy. They had become very severe. One example is when his brother loaned him his truck to run to his house (20 miles away) because his wasn't running right. He left, went to a corner store about 2 miles up the road, went in and bought some cigarettes and a drink, came out, got in the truck, and fell asleep pulling out of the parking lot. There was an accident, no one was hurt but, it sure was scary. The police didn't believe his story of falling asleep so he went through the usual DUI checks and, of course, was not charged with DUI.
The old man has always kept the boys (his brothers) on our insurance so, thankfully, we didn't wind up bankrupt either.
Back to the fantastic health insurance.
He was diagnosed with sleep apnea. He was set up with a CPAP machine and a prescription for Armodafinil (Nuvigil) which he promptly became addicted to.
Armodafinil
Our (limited) understanding of the drug was that it was to increase his alertness and wakefulness and along with the CPAP, give him a better quality of sleep and life.

Nuvigil is used to treat excessive sleepiness caused by sleep apnea, narcolepsy, or shift work sleep disorder.
Nuvigil may also be used for purposes not listed in this medication guide.

DRUGS
He worked nights at this manufacturer. Days would go by when we didn't hear from him. No matter what time of day we went to his house, he would be asleep, using his machine but, it seemed as if he was sleeping 14 hours out of the day. Above, I mentioned him being addicted to his medication and by that I mean, if he didn't have the money for the "co pay" at the pharmacy he would be nearly unbearable, begging, complaining of aches and pains, sickness, we would always get it for him.
This went on for some years...Eventually, he began self medicating with street drugs. Amphetamines. He had become a recluse, except for work, and was spending tons of money on the drugs, eating out, general wastefulness, etc. There was a large (100 people) random drug screening at his employer. He got "popped". He lost his job. In all fairness they did offer him treatment options. The was an EAP where he worked but, he sunk into depression and just let the 90 days go by. We encouraged him to take advantage of the opportunity and to no avail. He wouldn't hear of going to a "professional" after all he was prescribed an "amphetamine" type drug and he just needed a stronger dose. The Doctor disagreed. Well, he lost his job, house, and wound up moving in with their ageing Mother. She had become ill (cancer) so it was a blessing in disguise really.
She died and he wound up losing her place within a year. He is not very forthcoming with information so by the time we found out he was losing the house, it was too late to be saved. Since then, for the past maybe 3 or 4 years, he has been living off and on with us. We rented him and one of my other BILs a house for a while so I can't speak personally on that time however my youngest BIL did relate to us some odd episodes during the time they lived together in this house.
He just turned 50. He is about 6'3" and weighs in close (pushing) 300 lbs. He is a large framed man. His hand could make 2 1/2 of mine.
I encouraged him a few months ago to start seeing a Doctor at the local mission. He comes in once a week to see the people that live at the mission as well as the general public who have no health insurance. He was prescribed some blood pressure, prostate, and depression (prozac) medications. I really am not seeing an improvement in the depression category. He is sleeping about (most days) 20 hours. He will get up, eat, or take food to his room, and go back to bed. I've "caught" him binge eating throughout the night. I have insomnia often so, we meet in the kitchen. I making tea and him cleaning out the fridge. If I had to guess, I would say he is consuming around 4-5000 calories a day not including drink.
Nocturnal Sleep-Related Eating Disorder
He isn't bathing regularly, he doesn't use the bathroom regularly, he doesn't clean or wash his clothes. He stays hidden away in his bedroom.
He has applied for the local hospital's charity fund. If he is accepted, they will see him for a year, get him back on the CPAP machine, and provide his medications at no cost.
Over the years, we have heard him when he's sleeping...sleep talking.

Sleep talking (also know in the sleep field as "somnliloquy") is a sleep disorder that involves unconscious talking during sleep. Sleep talking varies in its content and presentation, ranging from mumbling, gibberish and nonsensical words to full, complicated, coherent narratives. Sleep talking can be spontaneous, but may also be induced by someone else who talks with them while asleep. This nocturnal language can even sound different from their wakeful speaking voice!

The medical term is:
Somniloquy
Now, it is on the increase as of late. I would say the past two weeks it has really gotten bad. We have heard many different voices.
I heard him yelling last night he just yells "Hey!" then gibberish. My daughter heard a woman laughing. On Thursday night, he had many bouts of this. The old man heard knocking, fast rapping and a child's voice, he went in to wake him and he was nowhere near the wall to have made those sounds. He woke him up, and within 10 minutes, it started again. The voices range from deep mumbling, something that sounds like foreign languages, women's voices, children, sometimes almost demonic. I've never heard a demon but, whatever that voice is, it will make the hair on your body stand up.
Now, we could call these "night terrors" except for I can not find any information about the different "voices".
Night Terrors
I am suggesting that the years of Nuvigil COULD have led to something "wrong" in his brain or a type of "neurodegenerative disorder".
I found a study dated 2010 that suggests there to be no long term effects of this drug but,
National Institutes of Health

Armodafinil remained effective and was generally well tolerated. Increased monitoring of blood pressure may be appropriate in patients on armodafinil. Armodafinil represents an option for long-term treatment of patients with ES associated with treated OSA, SWD, or narcolepsy.

These voices! How could a person's voice change so much?!
Listen, I have thought demonic possession, etc. I am hoping for something a little more toothsome.
Any ideas?

a reply to: TNMockingbird
I talk in my sleep a lot. Some of it sounds like a "foreign" language. I put that in quotes because my sister in law says it sounds Algonquin-which isn't exactly foreign.
Anywho, maybe the drugs did cause brain damage to him. I've heard some people say that drug abuse can weaken barriers and let "things" in. Like a form of possession. I don't buy that, but with how you describe the voice changes, it sounds like what a possessed person would do in movies. Again, I don't believe that's the case. It's weird and I never heard about anything like that before. Sorry I can't help.

a reply to: Skid Mark

That's okay Thanks for reading.
I asked the old man just now if we could record him.

We're never really sure when it's going to happen. The old man says his brother has recorded himself before and may still have it. He has gone to the next county but, when he returns I will ask him about it.

The old man gets on here (on my profile) sometimes so, I hope he doesn't read this part...LOL
I have said that I think they all have some sort of mental issue as they believe they were haunted and sometimes still are. The old man sees and hears things. the house we recently moved out of, we had made a recording of what we think may have been an EVP.
Maybe if he (BIL) is experiencing severe brain injury OR mental illness...it COULD allow "something" in...
Or maybe extreme mental illness can allow one to somehow change their voice without knowing/realizing they are.
I just couldn't find anything "specific" about the voice changes when studying his diagnosis. It's odd how a large big guy could suddenly sound just like a child or a woman...

a reply to: TNMockingbird

I use to suffer from Sleep Apnea, but not anymore now. Thanks to good diet and lot of cardio + training.

I have a distant friend. (You know the friend of a friend thing ) That just went through some similar narcalepsy problems. Keep in mind I don't recall details but, I wanted to share with you something I thought was important.

In order to be able to work this woman was prescribed a drug cocktail that had her acting like a weirdo. So, she lost her job because of the side effects of the meds keeping her awake basically. Then she waited almost a year to go to an out of state speciaist and was told she was disabled and should never have been allowed to be on all the drugs.

The moral of this story I thought was important to share was that he may need to see a specialist that isn't just trying to medicate him.
ETA: the wait for an appointment was really a year, she didn't choose to wait a year.

I suffer from sleep apnea and here in the UK, if you drive, you have to comply by using a CPAP machine as sleep apnea is a proscribed condition for the driving licence authority, the DVLA, if you don't use the CPAP they will take your driving licence off you.
Sufferers from un-controlled sleep apnea can suffer a whole host of problems including lack of oxygen uptake to heart attacks but more prevalent is depression and other mental conditions as the lack of deep satifying sleep affects your whole way of life and the relationship with those around you.
It might not be immediately life threatening but by it's nature it is very, very serious.

Well, I talked to him. He no longer has any recordings. I suppose that's a symptom of a somewhat transient lifestyle.
He said that he initially made the recording to play for the Doctor but, after hearing it, he never played it for him. He was concerned about being sent to a mental institution.
He said he heard sort of the same things we described except he had heard a goat and something demonic "sounding". He said it terrified him.
I told him we had heard the "demonic" type thing as well and I have plans on recording him if/when it happens again.

He also told me that during his last sleep study (maybe 3 years ago) that he had stopped breathing 98 times in an hour.
He is hopeful to be accepted into the charity program and get started back on a machine, meds, etc.
He tells me that due to the oxygen deprivation, etc. that his heart is enlarging and that THAT would be the thing that kills him...

He was a little concerned that I was becoming scared of him. I assured him not, it IS a little freaky but, I nor the kids are SCARED.
He has the obstructive type of apnea.

I am unable to "control" his eating. I think it's a compulsive/disorder type of thing. He's a big man so I won't be getting in between him and the fridge...
I am hopeful that he can see a specialist soon.
The only "requirement" that I am aware of here in the US is if you don't use you machine the way you are supposed to, you will have it taken back by the Doctor/Insurance Company.

Thanks all above for your responses!
A star for all! I wish I could give more...

I have sleep apnea and had a heart attack because if it.

Talking in my sleep ?????
If i did no one would be able to understand me because of the C-pap mask.

I have lots of sleep problems. I shout, have conversations and do all manner of funny things. I also have long periods of exhaustion and excess energy. Flu jabs have been connected to narcolepsy most recently and I have never vaccinated my kids and time has proved me right. Loads of research once you get started. One other option I can think of is this youtu.be... Mind blowing stuff but nothing surprises me anymore! Also Barrie Trower on you tube who is an absolute here.

Hope your brother gets better

Having just re-read your brothers story I would suggest the second option!