A medical disorder among asari. Specifically, it is a melding disorder. Among other negative effects, an asari with T'Veis Syndrome risks the loss of memories when melding. Any memory shared through the meld might be disrupted. This sort of nervous system damage is akin to a milder form of what those with the disorder known as Ardat-Yakshi inflict on their partner. T'Veis is one of several genetic conditions that can affect melding in a minority of asari, though they are less well-known than the (largely mythologised) Ardat-Yakshi.