Allergic Contact Dermatitis - Symptom, Causes & Treatment
Contact Dermatitis is also known as contact hypersensitivity. The term contact dermatitis sometimes is used incorrectly as a synonym for allergic contact dermatitis (ACD). Contact dermatitis is an itchy skin inflammation caused by an allergic reaction to material in contact with the skin. The dermatologist may also perform patch tests.
ACD occurs when the skin comes in contact with an allergen, the reaction usually appears within 48 hours after the initial exposure to the allergen.
This can occur through one of two mechanisms: irritant or allergic.
Symptoms and Causes of Allergic Contact Dermatitis
- The dermatitis usually shows redness,
- Most contact dermatitis is diagnosed by distribution of the rash.
- water blisters
- The blisters may break, forming crusts and scales.
- skin may darken and become leathery and cracked.
- Allergic contact dermatitis can be difficult to distinguish from other rashes, especially after it been present for a while.
Avoid the suspected irritant or allergen. This is sometimes not possible but use of protective clothing, such as gloves, can help. In some cases of occupational exposure, time away from work may be necessary.