My mother who is 86 told me today that the other night she had a sudden bought of a really bad taste in her mouth. She described it as horrible!!! It scared her. It lasted until she went to bed. She was able to go to sleep but the next morning it was still there, though not as bad. She went to the dentist and they did a cleaning and found nothing. They suggested she go to the dr. She has not at this time. Said she would wait to c if it happened again. I just am concerned it is a symtoms of something more serious. She in in fairly good health for 86. She has had a history of asthma. Lately she has also complained of swollen ankles and feeling tired!!