Andrea Braden was last seen on Thursday at her home on Fantasy Lane in Montgomery.
Authorities say she was last seen wearing jeans with holes and a hoodie sweatshirt.
Andrea is believed to be in the Magnolia or Montgomery area.
Deputies acknowledged that Andrea has run away from home before, but say she could be in danger without medication for an unstated condition.
If you have seen her, call the Montgomery County Sheriff's Office.
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