To the principal,
I am Dilshad Khan, a student of your school. I am writing this letter to request for a leave of absence from school due to viral fever.
As per the doctor's advice, I need to rest for a few days and hence cannot attend school. I will be back to school as soon as I recover. I have been keeping up with my studies and will not fall behind.
I understand the importance of attendance but in this case, I would request you to consider my leave application. I promise to make up for the missed days once I am back.
Thank you for your time and consideration.
Sincerely,
Dilshad Khan