I have applied for social security disability and had to take an early withdrawal from my 401k can i take a permanent disability credit for 2015?

I'm trying to finish my 2015 return.  In 2015, I took a cash withdrawal after being separated/terminated from my employer.  I didn't know there was such thing as "hardship" withdrawal at the time.  I have applied for social security disability and am still waiting.  I was 50 or 51years old at the time.  can I get a permanently disabled credit?