May be your father face some unpleasant and grief after his mother passed away . Grief counselling is needed and also to check  brainfog , memory issues , behavior issues for proper diagnosis. As you told specifically  mafter his mother passed àway , we should give him talk therapy and expressive arts therapy madam As per observation along  psychiatrist medications will be needed . Better consult with  psychologist You can find me out in SHALINI PSYCHOLOGY CARE,  Mobile counselling

Hi, consult a psychiatrist and explain about your fathers condition. It looks like your father is suffering from depression and anxiety. It will be good if you can consult a psychiatrist who can help your father. Counseling is also effective in treating depression and anxiety. I recommend that you first consult a psychiatrist and then consider Counseling.

Hey, thank you for reaching out. I understand how difficult this can be for you right now. What your father is going through can be due to the grief of losing his mother. Bereavement can lead to feelings of confusion, bouts of forgetfulness, anxiety, and disorientation. To overcome the feeling of anxiety, your father can try the 5-4-3-2-1 grounding technique to feel more connected to the present. You can also guide him using various breathing techniques like the Box Breathing Method and the 4-7-8 Method when he feels very anxious. He can write down his tasks on a sheet of paper to avoid forgetting when he has multiple tasks on his To-Do List.

Hi... Please first take him to a Psychiatrist to make sure if he going through some condition (Alzheimer's). After diagnosis, treatment will be done accordingly. He might need both medication and counselling/psychotherapy.

Consult a psychiatrist. He will prescribe medicines appropriately..