Cases of jaundice? Kindly, logical doctor's needed here (6)

I believe the answer is:

jekyll

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'doctor's needed here' is the definition.
(as in Dr Jekyll and Mr Hyde)

I don't understand the remainder of the clue.

(Other definitions for jekyll that I've seen before include "Famous novel: 'Dr . . . . . . and Mr Hyde'" , "Doctor with an alter ego" , "Hyde's alter ego" , "The Strange Case of Dr . . . . . . and Mr Hyde" , "Famous novel' Dr......and Mr Hyde'" .)

I've seen this clue in The Times.

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