Can physiological saline treat skin allergies?

Normal saline has certain supportive effects in treating skin allergies, but it cannot directly treat skin allergies. Normal saline is a 0.9% sodium chloride aqueous solution whose osmotic pressure is similar to that of human blood, helping to maintain normal cell morphology and body fluid tension. In the treatment of skin allergies, the role of normal saline is mainly reflected in the following aspects: 1. Cleansing effect: Normal saline can clean skin areas affected by allergies, removing dirt, secretions, and allergens, thus helping to reduce the impact of external irritants on the skin. 2. Moisturizing effect: During skin allergies, the skin may become dry; normal saline provides moisture and hydration, helping the skin maintain an appropriate water balance. 3. Anti-inflammatory effect: The salt content in normal saline has certain anti-inflammatory properties, which can help reduce inflammatory responses caused by skin allergies. However, normal saline does not have a direct therapeutic effect on skin allergies. When skin allergies are severe, medical attention should be sought promptly, and appropriate antiallergic medications or other treatments should be used under a doctor's guidance. Additionally, prolonged use of normal saline is not recommended, as it may cause skin irritation and dryness.