What are the symptoms of allergic dermatitis?
Apr 20, 2023
Source: Cainiu Health
Dr. Liu Wan
Introduction
Allergic dermatitis may stimulate capillary dilation and increased exudation of tissue fluid, leading to redness and swelling. It may affect tissues throughout the body. Allergic dermatitis is primarily caused by skin contact with allergens, triggering an excessive immune response. Allergens may induce capillary dilation and greater tissue fluid exudation, resulting in redness and swelling. Scratching can worsen the condition.
Allergic dermatitis may present symptoms such as redness and swelling, itching, dryness, cracking, and flaking. Specific analyses are as follows:
1. Redness and Swelling
Allergic dermatitis is mainly caused by an excessive immune response triggered when the skin comes into contact with allergens. Allergens may stimulate capillary dilation and increased exudation of tissue fluid, leading to redness and swelling.
2. Itching
Allergens can circulate throughout the body via the bloodstream, potentially affecting tissues systemically and causing localized or generalized itching, which may worsen after scratching.
3. Dryness, Cracking, and Flaking
Allergic dermatitis can also cause papulovesicular rashes. After scratching and rupture, exudate may be released. During the healing process, flaking or cracking of the skin may occur.
In addition to the common adverse symptoms mentioned above, allergic dermatitis may also lead to blisters and erythema. In such cases, it's important to promptly avoid exposure to allergens, maintain personal hygiene, and follow medical advice to clean the affected area with calamine lotion or take antihistamines such as cetirizine hydrochloride tablets or loratadine capsules. If symptoms are severe, patients should seek timely medical attention at a hospital.
