Impact of OnabotulinumtoxinA (BOTOX®) on Stress

The purpose of this prospective single-center, blinded\*, randomized, proof-of-concept study is to determine whether OnabotulinumtoxinA (BOTOX®) injections will change the level of stress perceived by generally healthy adult female participants. It is hypothesized that BOTOX® injections will be associated with decreases in perceived stress levels, measured by scores on the Perceived Stress Scale (PSS) questionnaire. The primary outcome measure is a chronological decrease in PSS scores between any two points of the study period. Comparison of the placebo- and BOTOX®-treated participant scores will either support or disprove the study hypothesis. Qualified participants who meet the study requirements, including a one-time completion of basic laboratory testing before treatment. The treatment visit starts on day-1 of a 12-week period, which consists a total of four clinic visits and one online visit, which involve: * vital signs and Body Mass Index (BMI) measurements * basic/interval history and physical * 2 Perceived Stress Scale (PSS) questionnaires * injection of 64 units of either BOTOX® or sterile salt solution * stay for 60-minutes after treatment for monitoring and to complete study tasks