Hydroxychloroquine could cause Trump hallucinations -- and 'severe' mental changes: report
President Donald Trump hugged the US flag as he arrived to speak at the annual Conservative Political Action Conference in National Harbor, Maryland. (AFP / NICHOLAS KAMM)

President Donald Trump could be experiencing unwanted side-effects from his use of hydroxychloroquine.

CNN's Bob Ortega warned of the danger following Trump's admission he has been taking the drug.

Indeed, the organization does warn of potential mental health impacts.

"Feeling that others are watching you or controlling your behavior," is one potential side effect.

"Feeling that others can hear your thoughts," is another.

"Feeling, seeing, or hearing things that are not there," is also listed.

"Severe mood or mental changes," is also listed.

Mayo also warns of "unusual behavior."