The weakness makes half of your face appear to droop.
The former Bachelorette 34 became a mom in 2005 when her eldest daughter Ricki was born.
The pair called it quits in the fall of that year.
People shared plenty of after it happened and many fans knew a pregnancy announcement was surely not going to be far away.
Johnson did not reveal more details about her diagnosis at the time but this was not the first time she has experienced the condition.
Johnson reflected on how her 2020 unfolded in a series of flashbacks photos on her Instagram story.