 [ Symptoms ] i failed 2 tests at a neurology consult the knee jerk reflex & i am unable to walk heel toe without falling pls help i am 55 yo female sp breast ca x 9+ yrs i have osteopenia 2 cervical and 3 lumbar herniated discs a long standing history of tension headaches & migraines  at a new neurologist consult this past week i failed the knee jerk test more worrisome is that i can not walk heel toe heel toe without falling over what should be my next step and what may be the reason for this [ Disease ] i am not sure what type of std you are referring to but you and your partner had previous partners then this is the source not all people are totally honest about their past sexual experiences how does the std get started if both partners have only been with each other and no one else is it a virus that mutates into an std then infects a person