Formaldehyde poisoning has shown allergic reactions, considered to be contact-related formaldehyde poisoning. First and foremost, one should remove themselves from the formaldehyde environment and go to a place with fresh, circulating air. At the same time, it is essential to ventilate the room by opening windows to reduce the concentration of formaldehyde. Oral antihistamines, such as levocetirizine or loratadine, should be taken to alleviate symptoms. If there are numerous rashes, topical application of calamine lotion can help with itching, inflammation, and provide an astringent effect to relieve symptoms. It is also advisable to drink plenty of water and consume fresh vegetables and fruits to replenish vitamins. Avoid spicy, irritating foods, and foods that trigger allergies, like seafood. Prevention is key in managing formaldehyde poisoning. Workers dealing with formaldehyde should wear proper masks and protective clothing to minimize poisoning symptoms. If it is a new house, ensure thorough ventilation before moving in, to avoid poisoning and allergic reactions. (Note: Use medications under the guidance of a physician.)