Hey dear ,

Good Greetings

Hope you recover soon .

I would like to recommend you to write an  application and Mail it to BOARD OF SECONDARY EDUCATION.ASSAM, describing your condition .Attach your medical certificate along with the application . Hope they will respond to your application asap.

Or contact the board through the helpline no. provided on the official website of HSLC.

For any query feel free to ask .Happy to help !!!!