Invicta FC lightweight Veronica Rothenhausler, pictured above (right) prior to her bout with Charmaine Tweet,  announced her retirement from MMA competition last week.

“I won’t be taking any more fights,” Rothenhausler’s message read on her Twitter account. “I had a serious brain injury in my last bout, and after it being my 5th concussion, I’m still dealing with the aftermath. Thank you for everyone who stood by my side through everything.”

The 25 year old Rothenhausler, who trains at Team Alpha Male in Sacramento, CA, began her MMA career with three straight first round knockouts in amateur competition, according to her record.

She made her professional debut at Invicta FC 4 in 2013, and seemed to pick up right where her amateur career left off — knocking out Katalina Malungahu at 1:12 of round one.

She was supposed to compete at Invicta FC 6 later that year. But she was scratched from the lineup after passing out the day of weigh-ins, attempting to make featherweight limit for the first time.

She returned to lightweight, but was the victim of a first round knockout in her next fight, against Charmaine Tweet last September.

Rothenhausler told Marc Raimondi of MMA Fighting the concussion was the fifth of her career. She had sustained two concussions in the weeks leading up to Invicta 6.  Against Tweet, she also fractured an orbital bone.

Slurred speech followed along, with now-daily headaches.

“I don’t think that I’ll compete again,” Rothenhausler said in Raimondi’s report. “When I sit down and think about it, is it worth me not living? The doctor said your next blow to the head could be the one and that’s f—ed up to hear.”