My mother is 85 and has been dizzy, experiencing severe headaches, some abdominal discomfort and worsening nausea for the past 20 hours. For the past 6 hours, she has been incoherent, lacking good judgment and not listening or retaining information. Also she is feeling cold even though her house is very warm. For the past several days, she has difficulty urinating, but only when she wakes up in the morning.