(Portland, OR)  --  Police are searching for a missing woman who suffers from mental illness.  The Sandy Police Department says 37-year-old Brittney Taussig went missing Sunday afternoon after leaving her parents' house.  Taussig reportedly told her parents she was planning to walk to her home in Federal Way.  Police say she doesn't have her necessary medications with her.  She was last seen wearing black leggings and a grey shirt with a Hawaiian-print tote bag and black flip-flops.