Redness on the neck can be caused by a variety of reasons, including skin inflammation, infection, and allergic reactions. This condition is usually accompanied by specific symptoms such as itchy, painful, or burning sensations. If the redness is accompanied by fever, worsening pain, or spreading, it may indicate an infection.

Another possibility is an allergic reaction, which usually occurs after contact with certain allergens, such as cosmetics, detergents, or foods. Allergic reactions causing neck redness are often accompanied by rashes, swelling, or difficulty breathing. If symptoms worsen or are accompanied by severe features such as difficulty breathing or a swollen throat, immediate medical attention should be sought.

Patients must know that when a red neck is accompanied by severe pain, fever, or significant swelling, it could be a sign of infection or other serious conditions, and immediate medical attention should be sought. Avoid self-diagnosis, as the same symptoms can be caused by many different reasons, and only an examination by a professional doctor can determine the specific cause.

[Prevention Tips:]
1. Maintain good personal hygiene habits, such as washing hands frequently and avoiding contact with known allergens.
2. Pay attention to a healthy diet and avoid eating foods that may cause allergies.
3. Before using new skincare products or detergents, perform a skin test to observe for any allergic reactions.