Poison Ivy Yellow Discharge. Contact with poison oak or poison ivy can cause dermatitis in individuals sensitive to the toxic Urushiol oil contained in the plants. Poison ivy leaves vary greatly in their shape, color and texture.
One's individual skin sensitivity, the amount of poison ivy oil on the skin, and the amount of time the oil is on the skin prior to washing determines the speed and severity of the rash. Assuming you have washed thoroughly, the normal progression is, several hours after exposure you will start to get the itching sens. Places where the rash seems to be spreading are places that also came in contact with urushiol, whether directly or through other objects such as clothes.
Under no circumstances should you mow over a patch of poison ivy or attack it with a weed-eater, as this will spread the chopped up bits over a wide area.
The fluid in the blister is one's own serum and not the allergic oil from the poison ivy plant called urushiol.
Some leaves have smooth edges, while others have a jagged, tooth-like appearance. Poison ivy is a plant that can cause an itchy, uncomfortable rash on your skin. Does fluid discharge from itchy poison ivy blisters cause infection to spread?