How was kratom used traditionally?

In Southeast Asian countries such as Thailand and Malaysia, kratom has been traditionally used for centuries for conditions such as fever, cough, diarrhea, diabetes, hypertension, pain and also for opioid and alcohol withdrawal. It has also been used to increase energy and to increase sexual desire. Although regulatory authorities have been restraining kratom use in Thailand and Malaysia, it remains widely used, especially in rural areas.^[1][2]