Contact dermatitis causes the skin to become itchy, blistered, dry and cracked. Lighter skin can become red, and darker skin can become dark brown, purple or grey. This reaction usually occurs within a few hours or days of exposure to an irritant or allergen.
How do you describe contact dermatitis?
Contact dermatitis is a red, itchy rash caused by direct contact with a substance or an allergic reaction to it.
How do you describe dermatitis rash?
Dermatitis is a general term that describes a common skin irritation. It has many causes and forms and usually involves itchy, dry skin or a rash. Or it might cause the skin to blister, ooze, crust or flake off.
What are the features of the simple contact dermatitis?
Contact dermatitis is a type of inflammation of the skin. Some symptoms of contact dermatitis can include itchy or dry skin, a red rash, bumps, blisters, and swelling. The rash is not contagious or life-threatening, but it can be very uncomfortable.
What type of reaction is seen in allergic contact dermatitis?
Allergic contact dermatitis is a Type IV hypersensitivity reaction, caused by a different immunologic mechanism than hives, angioedema, or anaphylaxis. However, very rarely, patients may have immunologic dysfunction which results in multiple types of concurrent hypersensitivity reactions.
How do you describe physical contact dermatitis?
Contact dermatitis usually leads to erythema and scaling with visible borders. Itching and discomfort may also occur. Acute cases may involve a dramatic flare with erythema, vesicles, and bullae; chronic cases may involve lichen with cracks and fissures.
What does a lesion look like?
Skin lesions are areas of skin that look different from the surrounding area. They are often bumps or patches, and many issues can cause them. The American Society for Dermatologic Surgery describe a skin lesion as an abnormal lump, bump, ulcer, sore, or colored area of the skin.
How do you classify a rash?
Within primary morphology you can stratify a lesion based on whether it is flat or elevated. If the lesion is flat, then it will be either a macule or patch. A macule is a flat lesion smaller than 1 cm and a patch is a flat lesion larger than 1 cm. Elevated lesions are either solid or fluid-filled.
How do you describe a lesion?
A lesion is any single area of altered skin. It may be solitary or multiple. A rash is a widespread eruption of lesions. Dermatosis is a generic term for a disease of the skin.
What does allergy rash look like?
What does a skin allergy look like? There are several different types of skin allergy reactions that allergists treat. Hives (also known as urticaria) are raised itchy bumps. Typically hives appear reddish, and will “blanch” (or turn white) in the center when pressed.
Is contact dermatitis always itchy?
In nearly all cases of contact dermatitis, a rash will develop after exposure to an allergen or irritant. This rash may appear red on lighter skin tones, while on darker skin tones, it may appear dark brown, purple, or gray. In most cases of contact dermatitis, the rash will be discolored and itchy, and it may sting.
What do stress rashes look like?
What do stress rashes look like? Stress rashes often appear as raised red bumps called hives. They can affect any part of the body, but often a stress rash is on the face, neck, chest or arms. Hives may range from tiny dots to large welts and may form in clusters.
Where on the body does irritant contact dermatitis most frequently start?
The hands and feet are commonly affected but ICD can occur on the face or elsewhere on the body. If the chemical is in contact with a large area of skin the rash may be extensive.
What is the most common cause of allergic contact dermatitis?
Nickel. Nickel is the most frequent cause of allergic contact dermatitis.
Can contact dermatitis rash spread?
Irritant Contact Dermatitis should not spread. The irritant affects the area where it came in contact with the skin. If the rash spreads to other parts of the body, you may have an Allergic Contact Dermatitis reaction. This type of contact dermatitis is immune-related and can spread away from the site of the rash.
Is contact dermatitis like a burn?
Irritant contact dermatitis (skin damage) tends to burn and be more painful than itchy.