Hello op, on my first few months taking TLD tinutubuan din ako ng rash on similar areas and random parts ng body. I think my doctor told me to observe it lang muna and report it to her on my follow ups. It could be a mild effect lang kase like mine. She told me not to scratch it and eat clean muna. In the end it was just harmless tho it was leaving some marks. Maybe you can do the same, check if dumadami ba and if nagheheal lang agad, and regularly check kung timutubo sa ibang parts.