An older woman is sitting nude at a desk. We can see her butt throughout the scene. Her right breast is fully visible for a few moments in the same scene. The older woman is lying in a bed, both her breasts are visible. The nudity isn't sexual in nature.

A child's head is eaten by a monster. You can see blood coming from the child's head but it's not awfully graphic.

A piece of flesh is seen on a stairwell.

An older woman tears a piece of flesh from her neck and arm

We see an older woman's back, it appears scaly and her back muscles move in an unnatural way

A man gets hit in the back of the head by a TV

A man's face is burnt by acid

A man is bitten in the neck

Around 50 swear words, mostly fuck and shit, and some occasional religious exclamations.

It's heavily implied that the daughter is an alcoholic

We see the daughter smoking a cigarette and drinking alcohol

A very unsettling, scary, and surprisingly sad film. Viewers who have lost loved ones to Alzheimer's will likely be heavily affected.