Does swelling on the head after an injury require ER consultation?
Observe at home.
With what you say it looks it is ok to observe at home.
Please rush to ER if she complains of a headache, if not responding to your talk. If she vomits or any deterioration in the consciousness.
You can upload a picture of the injury to check on the safe side.
Let me know if you have additional questions else you may close our discussion here.
Hope I have answered your query. Let me know if I can assist you further.
The bruise looks superficial though not so clear in the picture.
You can wait. But it is not safe to have superficial injuries as well at this age and with Parkinson's disease.
Hope I have answered your query.
Dr Suma Parinam, General & Family Physician