How to write instructions for the elderly and infirm?

Dear doctor/doctor team:

Hello!

On behalf of our family, I am writing this letter to fully explain my father's health. He is old and weak recently. We hope you can understand his situation and provide appropriate medical assistance when necessary.

My father is over eighty years old, and his health has gone from bad to worse in recent years. His eyesight and hearing have obviously decreased, and he often feels tired and weak. He used to be an active old man who liked walking, fishing and gardening, but now his physical condition no longer allows him to do these activities.

Recently, his memory has also begun to decline, and he often forgets what just happened. We are worried that this is an early symptom of Alzheimer's disease. He has undergone several amnesia tests, but the results are not clear. We hope you can further examine and evaluate his situation.

In addition, his sleep quality is also very poor, and he often wakes up at night, making it difficult to fall asleep again. This made his mental state more tired during the day.

We fully understand that the health status of the elderly may change, but we hope you can fully understand the seriousness of my father's health status. We hope you can help him alleviate his pain and improve his quality of life. If possible, we hope he can receive medication and/or physical therapy to help him improve his sleep quality, strengthen his physical strength and relieve his pain.

We are well aware of the difficulty of medical work and sincerely thank you for your concern and support. If you have any questions or need further information, we are willing to provide them at any time.

Thank you for taking the time to read this letter.

[Your name]

[Your contact information]