my mom who is 76 for the past two days is convinced that i am talking to my sister, she believes that my sister thinks something is wrong, and earlier today she asked me to check her phone for a text she swear she saw, she claims to have seen it and checked 10 times, and became irate when i said the text wasn't there. about 30 mins ago she claims that i was yelling to someone over the phone when i was just enjoying a movie with my headphones on
There are many other medical conditions that can seem like dementia but are not. This is why she needs to be seen and have a thorough exam.
Penicillin and other antibiotics can cause neurological issues, including delirium, in some cases. Delirium symptoms can include confusion, hallucinations, seizures, and muscle twitching, and can appear within days of starting treatment. These symptoms usually go away within days of stopping treatment.
Call her doctor.