there was no confirmed information about Kendrick Lamar having ADHD (Attention-Deficit/Hyperactivity Disorder). Kendrick Lamar, a renowned rapper and songwriter, has not publicly disclosed any such diagnosis. However, please note that my information might be outdated, and I cannot provide real-time updates. To get the most current and accurate information, it's best to consult recent news sources or official statements from Kendrick Lamar or his representatives.