Phenergan should not be given to patients with a known hypersensitivity to promethazine or to any of the excipients.

Phenergan is well-known to cause extrapyramidal reactions in some people not 100 sure that s what you are describing, but it sounds like it , and diphenhydramine is a common treatment.

The virtue of therapy with phenergan can lie in moving that point farther away into the future.