The things you cannot eat with serpentine sores include the following: First, you cannot consume spicy and irritating foods, including raw onion, raw garlic, chili, mustard, strong tea, coffee, etc. Second, you cannot drink alcoholic beverages, including beer and white wine. Before the onset of serpentine rash, there may be mild fatigue, low fever, poor circulation and other systemic symptoms, and the affected skin may have a burning sensation or neuralgia, with obvious pain sensitivity to touch, lasting 1 to 3 days. The most common sites are the intercostal nerve, cervical nerve, trigeminal nerve and lumbosacral nerve innervation areas. The affected area often first appears as a flushed spot, followed by a corn to soybean-sized papule, which is distributed in clusters without fusion, and then rapidly turns into a blister with a tense, shiny wall and clarified fluid, surrounded by a red halo, with normal skin between the clusters of blisters.