Dareel was a Trill physician in the 23rd century.

Dareel was the doctor in residence at the Trill Embassy in Nagano, Japan on Earth, and performed the operation separating the Dax symbiont from its dying host, Torias, in the year 2284. (DS9 - The Lives of Dax short story: "Infinity")

Dareel was still alive and practicing medicine on Trill in 2289. Curzon Dax knew Dareel. (ST novel: Forged in Fire)

The story leaves both Dareel's gender and joining status unclear.
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