###Human: What causes vaginal rashes and blood in urine? ###Assistant: Hello. If there is no burning sensation while urination or there is an increased frequency of urine accompanied with red urine then unlikely that you have a urinary tract infection, instead you are likely to be suffering from vaginitis. Please get a high vaginal swab and a urine culture to rule out infection first. If diagnosed then you can be prescribed a course of antibiotics accordingly. The presence of painful rashes at the vaginal opening on one side could be herpes zoster lesions. Please send a picture of the lesions for a possible diagnosis. Are you a sexually active lady?