Urticaria is a common allergic skin reaction, mainly manifested as red or skin-colored wheals, often accompanied by itching. Its occurrence is usually related to multiple factors such as allergies, infections, and physical irritants. If symptoms recur, it is recommended to seek medical attention promptly to identify the underlying cause.

Specific reasons may include:

1. Allergens: Foods (such as seafood and nuts), medications, pollen, etc., may trigger an overreaction of the immune system.
2. Physical stimulation: direct stimulation of the skin by friction, pressure, temperature changes or sunlight.
3. Infectious factors: Viral or bacterial infections may induce or aggravate symptoms.
4. Other contributing factors: Mental stress, endocrine changes, or certain chronic diseases may also affect the condition.
In daily care, record your diet, activities, and environmental exposure before an attack to help identify potential triggers. Avoid scratching during an attack; apply cold compresses to relieve itching. If the wheals persist for more than 24 hours or are accompanied by symptoms such as difficulty breathing, seek medical attention immediately. Patients with long-term recurrent attacks can receive standardized treatment under the guidance of a doctor and should pay attention to maintaining a regular sleep schedule to reduce the impact of anxiety on the skin.