Do you have ideas about why the silymarin does this?
Silymarin interacts with iron, reduces iron levels, I don't know if it will increase or reduce iron circulation, and this causes the hand curling.
My doctor said it was genetic, neurological, and is often associated with night terrors.
I am no doctor, but I think those symptoms are from mineral imbalances. Just a few days ago I read that magnesium is the missing mineral in night terrors (sorry I forget where I read that).
one shoulder folded up, head on front lower head of tricep, in a way that many people can't even contort themselves to
I couldn't picture the description, but it doesn't match As. I recommend some reading of homeopathic materia medica to find out more about your specific position - I suggest to google for "homeopathy sleep position" and something more descriptive of your position.
I have a long story about how I confirmed the As sleeping position...
The 1st time I read it was on Cutler's books, and he certainly researched thru homeopathic materia medica.
Then a friend of mine told me she always sleeps with the arms above her head, and she does have a lot of other As behavioral symptoms (poor judgement, hurting herself).
Last year after taking methylfolate I slept like that for a couple of months during winter. More recently I read or watched a video of Ben Lynch stating that As is the 1st metal detoxed by Mfolate.
Also last year my parents' neighbors put a swimmingpool in the yard with a wooden deck. I had just read in Cutler's book that one source of As is wood treated with arsenic. So I told my parents they had to change the place of their vegetable garden because the earth would be contamined by the neighbor's wooden deck. Another neighbour who is agronomist confirmed what I said.
Now it gets interesting and sinister:
The owner of the swimmingpool was pregnant and after the baby was born she had undiagnosed adrenal fatigue/postpartum depression. She could never get up in the morning, and my mother would never see her outdoors with the baby.
Then one day she told my mother she had seen a doctor because she was waking up with numb arms, and was doing tests for blood coagulation. Just one thing she never asked herself was why all of a sudden she was sleeping with her arms above her head... And the husband came and showed a picture of the baby on his cell phone: "look at the baby girl, she sleeps with the arms above her head just like her mom!" So one could wrongly say it is genetic to sleep with the arms above the head just like your dr. said, Crit.
At this time the baby was less than 1 month old, and my parents were building a big wall to replace the wire fence close to the wooden deck, and my parents told them the wall was because of the poison of their deck. They weren't impressed. Now guess what is the profession of the woman... she is a chemist, and is not afraid of chemicals...
Then the agronomist came by to visit my mother, and we told her about the neighbor's and the baby's symptoms, and she confirmed that those were As symptoms.