..... called 911 said he was combative and harming himself and said audio of the call confirms he was threatening to kill his family.
If true, then yeah. The boy need to be restrained.
Yes, it depends on the call to 911.
Went thru a similar thing when my dad went into dementia. Out of his mind at 3am and I was there to try to calm things.
Cops showed up to protect us AND the 1st Responders.
Didn’t need them and they were non-intrusive. Stood on the porch until he was put into the ambulance.
Great guys.
There are some forms of epilepsy that include temporary psychosis or hallucinations. Vomiting is also common.
Handcuffs may or may not have been called for, but how they handled him after the vomiting began is critical since choking or aspiration of vomit can have fatal consequences.