The wife of the conspiracy theorist Alex Jones was arrested on Christmas Eve on a domestic violence charge the rightwing provocateur said stemmed from a “medication imbalance”.

Sheriff’s deputies booked Erika Wulff Jones into an Austin jail around 8.45pm on Friday. Jail records showed the 43-year-old faced misdemeanor charges of assault causing bodily injury to a family member and resisting arrest, search or transport. By the afternoon of Christmas Day, she had not received a bond.

Alex Jones, an Austin resident and founder of the rightwing media group Infowars, declined to say if he had been injured or to elaborate on what happened beyond that he believed it was related to a recent change of medication.

“It’s a private family matter that happened on Christmas Eve,” Jones said. “I love my wife and care about her and it appears to be some kind of medication imbalance.”

The Travis county sheriff’s office did not immediately respond to a request for the report on Wulff Jones’s arrest and a spokeswoman could not provide information. An attorney for Wulff Jones did not immediately respond to a request for comment.

Jones went to court himself this week, seeking to block subpoenas issued by the House committee investigating the 6 January insurrection at the US Capitol.

Jones spoke at a rally in support of then president Donald Trump that preceded the riot and his Infowars colleague, Owen Shroyer, was charged with crimes related to it in August. Shroyer has said he is “innocent of the charges”.

Jones said his wife’s arrest “doesn’t concern my politics” and that “it wasn’t some kind of personal hateful thing or anything”.