Concussions to Blame for Plano Double Murder-Suicide?

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PLANO -- Family and friends are trying to come to terms with the death of local TV personality Stacy Fawcett and her 17-year-old son, Josiah. Police say Stacy's oldest son, 19-year-old McCann Utu, stabbed them to death Friday inside their Plano apartment.

He then turned the knife on himself and later died at the hospital.

Stacy Fawcett

Stacy Fawcett, Dallas "Favorite Foodie," killed in Plano double murder-suicide

Family members believe the Plano West High grad was never the same after a head injury on the basketball court.

“With the concussion, it’s been hard for him, we’ve been trying to seek some treatment,” said Fawcett's mother, Lynn Kroft.

Dr. Brandon Brock with the Cerebrum Health Centers says multiple concussions and conditions, like CTE, can dramatically change your personality.

“We know that their is a certain age right around 6, 7, or 8, if you have a concussion, it can really affect your stages of development," Dr. Brock told NewsFix. "And then, as you’re going through puberty, if you’re having multiple concussions, it can alter your mind.”

CTE is a degenerative disease that effects the brain and is caused by multiple head injures. McCann’s family says he had two concussions that they know about -- both within the past three years.

Whether or not McCann had CTE has yet to be determined, but whatever the results show, Fawcett's family  are forced to deal with this horrific issue head-on.