All Ghouls have disabilities related to their Element.
❤️ Fire Ghouls have chronic fatigue. In many cases, this is due to metabolic disorders, which is in turn caused by the heat of their Element literally burning through their energy stores at a higher rate.
💛 Air Ghouls have chronic pain and often require mobility aids. This is due to the fact of trying to contain their ethereal/intangible Element in a solid, physical form.
💙 Water Ghouls have impaired vision/blindness, similar to many deep sea creatures. Even fresh water Ghouls can be affected, though often to a lesser extent.
💚 Earth Ghouls are deaf/HoH and use sign, which they teach to their packmates. This is a result of otosclerosis, abnormal bone growth in the middle or inner ear, the growth itself occurring due to their Element manifesting physically.
💜 Quint Ghouls have chronic migraines. These are triggered by their departure from their natural climate (the shift away from intense cold).
🖤 Multi Ghouls have whichever disability aligns with their dominant Element, but it can fluctuate. Even though Swiss is Fire-dominant, he often experiences migraines.
🩷 Hybrid Ghouls can manifest any of their Elemental disabilities. For example, Dew's fatigue wasn't evident till after his transition, and he usually refuses to wear his glasses.