Erythema
Pruritis
Blisters
Skin changes can become permanent in the form of hyper/hypopigmentation and keloid formation
Fever
Chills
Myalgias
Syncope
Sea anemone envenomation
Toxins
Fire coral envenomation
Ciguatera
Box jellyfish envenomation
Scombroid
Crown-of-Thorns starfish envenomation
Tetrodotoxin 