State Rep. Gloria Johnson (D-Knoxville) suffered what doctors described as a possible mini stroke over the weekend, according to KnoxTNToday columnist Betty Bean.

Johnson, who is in the process of moving to run for a new House seat after Republicans drew her into the same district as fellow Knoxville Democrat Sam McKenzie, collapsed at a TJ Maxx on Saturday night. Fellow shoppers Michael and Mandy Knott called 911 and informed Johnson’s mother she was being taken to the hospital, Bean reported.

As of the report, Johnson hadn’t yet seen a cardiologist. But she was tentatively diagnosed with a transient ischemic attack (TIA), or mini-stroke. The contributing causes could include campaigning for the newly created District 90 seat during a heat wave and the stress brought on by fundraising and moving to a new neighborhood.

Johnson, who is soon to be 60, is a retired special education teacher and a longtime thorn in the side of Republican leadership in the House.

Read Bean’s full account here.