Cold Rash

Cold Rash is a liar. It feels like freezing, but what it actually does is cook. When the Infection within the body senses prolonged cold, it responds with the biological equivalent of panic: constricting blood flow and releasing chemical compounds meant to preserve body heat. The intent is protection. The result is internal chemical burning, localized tissue damage, and patterns that spread under the skin like frost on glass. The body is not freezing. It is being slowly destroyed by its own defense mechanism trying too hard to keep it alive.
  The first signs are deceptively mild. Pale blotches and itching on exposed areas. Skin that feels cold to the touch and takes on a mottled red-and-white pattern. Within a day, thin blisters form, weeping clear or faintly green fluid that can irritate unprotected skin on contact (though the disease itself does not spread this way). Stiffness and burning pain settle into joints and extremities. As the condition advances, muscle rigidity sets in alongside a loss of fine motor control, particularly in the hands and face. Pain alternates with deep numbness in unpredictable waves. The blisters crust over with a shimmering, frost-like residue that gives the disease its name. By the severe stages, skin turns gray-blue and brittle, cracking under movement. Necrosis begins. One limb stiffens and refuses to function entirely. If the Infection's reaction reaches the torso or vital organs, death follows within hours from systemic shock or cardiac failure.
  Cold Rash progresses faster than most wasteland diseases. Where others advance over months, Cold Rash can move through its stages in a single day of play, driven by continued cold exposure or re-exposure to the triggering conditions. This speed makes it particularly dangerous during winter expeditions or in encounters with Aberrants that emit freezing toxins. Civic Lineages carry an additional vulnerability; unaccustomed to heavy environmental exposure due to the shelters and comforts of settled life, they contract the disease at an advanced stage from the outset. Wasteland Natural Ones, by contrast, are naturally immune.
  Treatment at early stages is straightforward: warm water, circulation exercises, careful management of blistered tissue. Later stages require cutting away damaged flesh or amputating limbs where necrosis has taken hold. Survivors retain visible white scarring that glows faintly under certain lighting, a permanent signature of the cold written on the body. The marks are a testament to what happens when nature's indifference meets the Infection's misguided zeal, and a reminder that the elements remain a force no amount of preparation fully defeats.