What should I do about my wife's sudden aggressive behavior and emotional changes since 2019?

Based on the sudden and significant changes in behavior you’re describing, it’s crucial to consider that your wife might be experiencing a mental health issue. Symptoms like increased aggression, suspicion, insomnia, talking to oneself at night, and dwelling on past events suggest the possibility of conditions such as major depressive disorder with psychotic features, bipolar disorder, or even a personality disorder. It’s also worth considering the impacts of stress or trauma around the timeline of your brother’s wedding that could have acted as a trigger. Given that she refuses to see a doctor or take medication, this can make addressing the problem a bit challenging. However, an initial step could be to gently encourage her, perhaps with the help of a trusted family member or friend, to seek professional help. Highlight that seeking help is not a sign of weakness and that it’s all about improving quality of life and restoring balance in the family. It’s essential to avoid confrontational discussions about her behavior, but rather approach it from a place of concern for her well-being. If she is strongly against seeing a doctor, initially trying to involve a counselor or therapist might be a less intimidating step; some professionals offer in-home consultations or online sessions. To manage the current home environment stress, ensure that her basic needs—like sleep, proper nutrition, and social interaction—are being met as these can influence mood and behavior. Techniques like a calm, stable routine and ensuring she engages in activities she once enjoyed, where possible, might help. Additionally, the family might benefit from exploring support groups to manage stress. Regarding the request for medications like a syrup or homeopathic options, though these may offer mild calming effects depending on her receptiveness, they might not address underlying issues effectively. Recommending specific homeopathic remedies without examining her is not advisable either. Ultimately, the best course of action begins with professional evaluation to understand the root cause and prescribe the appropriate treatment for her specific condition.