A Study to Evaluate Adverse Events and How Single Ascending Doses of ABBV-141 Move Through the Body of Healthy Adult Western and Asian Participants

Inclusion Criteria: * A condition of general good health, based upon the results of a medical history, physical examination, vital signs, laboratory profile and a 12-lead electrocardiogram (ECG). * Body Mass Index (BMI) is ≥ 18.0 to ≤ 32.0 kg/m2 after rounding to the tenths decimal. For Part 2 only: -Han Chinese ethnicity or Japanese ethnicity based on the following criteria: * Han Chinese: First-generation Han Chinese with both parents of Han Chinese descent. * Japanese: First- or second-generation Japanese with both parents and all four grandparents born in Japan and of Japanese descent. Exclusion Criteria: * History of epilepsy, any clinically significant cardiac, respiratory (except mild asthma as a child), renal, hepatic, gastrointestinal, hematologic, or psychiatric disease or disorder, or any uncontrolled medical illness. * History of any clinically significant sensitivity or allergy to any medication, topical creams, or food. Additionally for Part 1, only: * Presence of foreign bodies, local irritation or infections, active skin diseases, tattoos, and/or scars on the thighs which may preclude the skin biopsy collection site planned as per schedule of activities. * History of bruising easily, bleeding disorders, thrombocytopenia, or hypo-coagulation disorder. * History of sensitivity to or allergies to adhesives or evidence of fragile or easily damaged skin. * Evidence of hypertrophic scarring.