"Blister Agents or vesicants are chemicals which have severely irritating properties and can produce irritated and reddened skin with progression to blisters, swelling and inflammation of tissues surrounding the eyes with progression to light sensitivity and lacrimation. High concentrations of vapor or direct liquid exposures to the eye can cause damage to the eye surface. Warm, moist tissues are most susceptible to damage and the tissues of the upper respiratory tract can also be affected. Symptoms of exposure may be delayed until hours or days after exposure depending on the magnitude of the absorbed dose. The major chemical warfare agents in this category are sulfur mustard, nitrogen mustards and Lewisite."
Lessons Learned Information Sharing (LLIS)