What is "shaykhism"

Shaykhism is an Islamic religious movement founded by Shaykh Ahmad in early 19th century Qajar Iran. It began from pure Shi‘a doctrine of the end times and the day of resurrection. Today the Shaykhi populations retain a minority following in Iran and Iraq. In the mid 19th century many Shaykhis converted to the Bábí and Bahá'í religions, which regard Shaykh Ahmad highly.