Looks like a burning bush.
If it was drift, the weigela next to it, the rose, etc would also be showing some damage.
Spider mites--although it usually doesn't look like that--can damage a burning bush, once again, assuming that's what it is.
Too much water?
Looks like it might be at the end of a porch, did someone dump some cleaning water near the bush?
Get a soil probe and check around the bush--too wet or too dry.
Keep us informed.
“Every step we take towards making the State the Caretaker of our lives,
by that much we move toward making the State our Master.”
~Dwight D. Eisenhower