Safety & Tolerability of MTS in Children Aged 6-12 Diagnosed With ADHD & Previously Treated With Extended-Release Methylphenidate Therapy

Inclusion Criteria: * Subject must have a primary diagnosis of ADHD * Subject must be adequately controlled on a stable dose of one of the following medications for a 30 day period: Ritalin LA(r), Concerta(r), or Metadate DC(r), not to exceed 54 mg per day * Females of childbearing potential must have a negative serum beta Human Chorionic Gonadotropin pregnancy test Exclusion Criteria: * A history of mental retardation that would indicate that the subject is not functioning at an age appropriate level intellectually * A recent history of suspected substance abuse or dependence disorder * Subject is taking Strattera * Clinical signs and symptoms of skin irritation or hyper/hypopigmentation at the potential application sites