Hello Abhigyaan,

No, candidate suffering from sinusitis are not acceptable in NDA medical exam. A candidate who is physically and mentally fit is eligible for joining defense services through NDA. Some other eligibility requirements for NDA are given as below :-

• Only unmarried males are eligible to apply for NDA 2020 .
• Candidates under the age group of 16.5 to 19.5 years are only eligible.
• Minimum education qualification required to apply for NDA is 10+2(Army), 10+2(Physics and Mathematics for Air Force and Navy) .

For more details you should read this article .

I hope this answer helps you.

Good Luck!!