Skin vasoconstriction in a reticular pattern is thought to be characteristic of a lightning injury. Electrocution is an injury caused by the passage of electric current through the body. It is usually caused by inadvertent electrocution or lightning strikes. When a person is struck by lightning, the heartbeat and respiration often stop immediately, accompanied by myocardial damage, followed by myosinuria, and skin vasoconstriction in a reticular pattern, which is thought to be characteristic of lightning injury. This is followed by myosinuria. Other clinical manifestations are similar to those of high-voltage electrical injury. Differential diagnosis of skin vasoconstriction in a reticular pattern: 1, the skin is scaly: psoriasis patients have scaly skin, psoriasis is a common chronic skin disease, which is characterized by the repeated appearance of multiple layers of silvery-white dry scales on the erythema. Traditional Chinese medicine ancient called “white? The ancient medical books also call it loose skin ringworm. Western medicine called psoriasis (Psoriasis), commonly known as psoriasis, which is characterized by the appearance of pimples of varying sizes, erythema, covered with silvery-white scales, with clear borders, and is most common on the scalp, the extensor sides of the limbs and the back. It is more common in men than in women. It is easy to relapse or aggravate in spring and winter, and more relieved in summer and fall. 2, the skin linear arrangement of small blisters accompanied by pain: herpes zoster keratitis systemic manifestations of herpes zoster precursor symptoms include general malaise, fever, chills and pain along the nerve skin distribution area, the skin occurs in a linear arrangement of small blisters; accompanied by neuralgia, from paresthesia to extreme persistent pain. 3, skin purple stripe: skin purple stripe refers to the skin has a purple-red, strip shuttle, different sizes of the skin, often distributed in the lateral buttocks, inner and outer thighs, armpits, naevus and lower abdomen, mostly for hypercortisolism accompanied by the characteristic changes.