convertitis
n.— «But converts have something to do with this too: it’s not all about susceptibility to Wahabism and Islamism. In the early months and in some cases early years after conversion to Islam, many undergo what long-standing Muslims refer to as “convertitis”: a tendency to be more Muslim than Muslims, a rigidity in religious observance. Fortunately, convertitis does heal and most new Muslims discover a religious balance, find acceptance among the Muslim community and flourish.» —“Some converts do fall prey to the fanatics. But let us remember the many who do not” by Ed Husain Observer (United Kingdom) Sept. 9, 2007. (source: Double-Tongued Dictionary)