Prevalence of Lidocaine Ineffectiveness in Adults With and Without ADHD

Using a non-invasive, pain-free, taste-based approach to assess lidocaine effectiveness, the study will assess the frequency of ineffectiveness in the target population. We will use an identical protocol at two sites: Jacobi hospital and Boston Clinical Trials. The controlled trial will assess the ability of lidocaine oral gel to block taste (e.g., sweet) in 100 teens and adults, half with a history of ADHD, and for females, we will compare the sub-groups with and without premenstrual syndrome (PMS). This study will also be compared with a similar assessment among a specialized ADHD population (NCT03563573), that does not respond to existing medication..