Allergic Contact Dermatitis: Symptoms, Causes, and Treatment
2016年9月27日 · Allergic contact dermatitis is especially common in metal workers, hairdressers, beauticians, health care workers, cleaners, painters, and florists. What causes allergic contact dermatitis? Allergic contact dermatitis is a type 4 or delayed hypersensitivity reaction and occurs 48–72 hours after exposure to the allergen.
Dermatitis: Types and treatments — DermNet
Exogenous dermatitis is the result of an external factor or insult that induces skin inflammation. Common causes include: Allergic contact dermatitis — due to immune sensitisation of an individual to an allergen, often at even low concentration, such as nickel, hair dye, rubber, or perfumes; identified by patch testing.
Dermatitis. Photosensitivity dermatitis
Contact photoirritant or photoallergic dermatitis The chemicals that cause irritant reactions may also cause allergic reactions. In general an irritant or toxic reaction is sunburn-like and results in deep pigmentation; an allergic reaction is more likely to resemble acute or chronic dermatitis.
Shoe contact dermatitis
Contact dermatitis may be due to allergic (type IV hypersensitivity reaction) or irritant dermatitis. Shoe dermatitis represents approximately 10% of all persons attending for patch testing. The culprit agent can range from products found in leather, colourants, rubber, or adhesive components, and can occasionally be mimicked by an allergy to ...
Contact allergic dermatitis of the arms and legs images
Contact allergic dermatitis of the arm and leg images. Created 2007. > Go to the image library. Contact ...
Allergic Contact Dermatitis Images — DermNet
Allergic contact dermatitis is a form of dermatitis/eczema caused by an allergic reaction to an allergen that comes in contact with the skin. View pictures of allergic contact dermatitis in the gallery below.
Allergic contact cheilitis - DermNet
It is common for patients with allergic contact dermatitis to have a second diagnosis such as atopic cheilitis or irritant contact cheilitis. Treatment of allergic contact cheilitis. Avoidance of the allergen in all of its possible sources is the treatment. The reaction then usually settles quickly.
Urticaria and urticaria-like conditions - DermNet
Contact dermatitis. Contact dermatitis sometimes appears urticarial rather than eczematous, with most of the inflammation in the dermis rather than the more superficial epidermis. It appears at the site of contact with the responsible agent; It may arise in irritant contact dermatitis or allergic contact dermatitis; Lesions clear up over days ...
Textile contact dermatitis
Allergic skin reactions to clothing is most often a result of the formaldehyde finishing resins, dyes, glues, chemical additives and tanning agents used in processing the fabric or clothing. Cases of allergic contact dermatitis have been reported for the following fabric additives.
Airborne contact dermatitis
Airborne allergic contact dermatitis. Airborne allergens that can induce allergic contact dermatitis include: Preservatives — particularly methylisothiazolinone, formaldehyde, and benzalkonium chloride — there has been a recent epidemic of airborne allergic contact dermatitis from methylisothiazolinone in water-based paints on freshly ...