The planet where the Interspecies Medical Exchange holds a conference attended by Phlox, who uses it to seek Vulcan research on T'Pol's illness in the Enterprise episode Stigma.
Dekendi III is the setting of a conference of the Interspecies Medical Exchange in the Enterprise episode Stigma, set in 2152. Doctors from many worlds attend, including a Vulcan delegation.
Phlox quietly asks the Vulcans for their research into Pa'nar Syndrome, the condition T'Pol contracted through a forced mind meld. The illness is associated with the minority of Vulcans who practise melding, and they are shunned for it. The doctors guess who the patient is and move to have T'Pol recalled, until one of them, a melder himself, speaks up in her defence.
The visit also brings Feezal, one of Phlox's wives, aboard Enterprise to install a new neutron microscope, and her open interest in Trip Tucker leaves the engineer thoroughly uncomfortable.