Minors in Missouri soon will be required to undergo 18 months of therapy before receiving gender-affirming health care under an emergency rule released Thursday by the state's Republican attorney general.

Attorney General Andrew Bailey announced plans to restrict transgender health care for minors weeks ago, when protesters rallied at the Capitol to urge lawmakers to pass a law banning puberty blockers, hormones and surgeries for children. The rule is set to take effect April 27 and expire next February.

The restrictions are in response to a former employee's allegations of mistreatment at a transgender youth clinic in St. Louis run by Washington University. Bailey is investigating the center.

"My office is stepping up to protect children throughout the state while we investigate the allegations and how they are harming children," Bailey said in a statement.

Moving forward, doctors who provide gender-affirming health care to minors must first provide them a lengthy list of potential negative side effects and information warning against those treatments, according to a copy of the rule released Thursday.

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Health care providers will need to ensure "any psychiatric symptoms from existing mental health comorbidities of the patient have been treated and resolved" before providing gender-affirming treatments under the new rule. Physicians also must screen patients for social media addiction, autism and signs of "social contagion with respect to the patient’s gender identity."

Bailey's rule was released the same day Missouri's Republican-led House voted to ban access to transgender-related health care for minors.

The House voted 103-52 along mostly party lines in favor of the ban, although the bill’s passage seems uncertain in the Senate.

The House proposal is stricter than what was passed by the GOP-led Senate, where Democrats have more influence through the use of stall tactics.

Senators compromised to exempt care for minors whose treatment is already underway. The Senate bill also would expire after four years.

Missouri Fox News graphic

New limits have been set on transgender care for Missouri youths and will begin soon.

The House version includes no exceptions for current treatments and would remain in effect indefinitely.

Republican Senate leaders said it’s unlikely that the House version will make it through the Senate.

"We’ve already passed legislation on this issue out of the Senate," Senate President Pro Tem Caleb Rowden said. "We would expect the House to appreciate how hard and difficult it was and to take up our bill and pass it."

Both the House and Senate proposals would ban inmates and prisoners from accessing gender-affirming surgeries and would end coverage of any gender-affirming treatments for Missouri patients on Medicaid, the federal health insurance program.

At least 13 states have now enacted laws restricting or banning gender-affirming care for minors: Alabama, Arkansas, Arizona, Georgia, Idaho, Indiana, Iowa, Kentucky, Mississippi, Tennessee, Utah, South Dakota and West Virginia. Bills are awaiingt action from governors in Kansas, Montana and North Dakota. Federal judges have blocked enforcement of laws in Alabama and Arkansas, and nearly two dozen states are considering bills this year to restrict or ban care.

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House debate on the bill became emotional as some Democrats argued the ban on health care will hurt transgender children.

"You are erasing my grandchild," said St. Louis Democratic Rep. Barbara Phifer, whose grandson is transgender.

Republican sponsor Rep. Brad Hudson, of Cape Fair, criticized Democrats for "threatening" to end political partnerships and friendships with Republicans over the bill.

Hudson said his bill "seeks to protect kids" and that it's unfair that Democrats are describing it as hateful towards transgender children.

"A yes vote is a vote to protect kids from sex-change drugs and surgeries," Hudson said.