San Bernardino County Sentinel: Because it is so inviting visually, it often comes as a shock to those people who attempt to pick it, as its leaves and stems are covered with yellow, stinging bristles or very prickly hairs. Those having touched it will feel stung, as the bristles are loaded with histamines and, in much more minute quantities, acetylcholine, serotonin, leukotrienes, and moroidin, though the stinging lupine is not as concentrated in these substances as are some other plants such as stinging nettle or poison oak, poison ivy or poison sumac. If upon encountering stinging lupine an individual is experiencing no more than contact irritation and no allergic reaction, the symptoms can be relieved by some simple procedures...