Brainworm Rot Type A represented a deadly air-transmitted ailment, classified as a specific variation of the Brainrot Plague. This plague impacted both human-like beings and squid-like creatures, resulting in elevated concentrations of dialogen within their circulatory systems. Notably, this included Neimoidians (along with what can be assumed to be Duros and related Near-Duros), Anomids, and Wol Cabasshites. Manifestations of the disease encompassed feelings of sickness, chills accompanied by perspiration, impaired comprehension of textual directions, grammatical inaccuracies in both verbal and written expression, and localized discoloration of gills and respiratory openings.
The Separatist Crisis saw a surge in refugees heading towards Coruscant, which consequently triggered a viral epidemic within the Manarai Heights area.
If unmonitored, this illness had the potential to progress from Brainworm Rot Type B. Similar to Brainworm Rot Type C, its genesis was probably on Neimoidia.