Fallout 76 mutations

Mutations are a type of condition in Fallout 76.

When the player character gets exposed to radiation, they have a chance to be mutated. This can occur from being struck by an irradiated source (zones devastated by nukes, irradiated creatures etc.) or by consuming radioactive food and liquid.

RadAway has a chance to cure mutations, while any radiation protection gear (e.g. hazmat suit or gas mask) reduces the chance of mutation. The Starched Genes perk will also prevent mutation but will prevent RadAway from curing acquired mutations, essentially making them permanent while the perk card is equipped.

Mutations are like traits from Fallout: New Vegas in that they have both positive and negative effects. The Strange in Numbers perk will increase the positive effect of a player character's mutation by 25% when their teammates are also mutated.

List
A character can get infected by these mutations: