World- Dermatitis

Each type of dermatitis has distinct sings and symptoms. Common signs and symptoms include:

• Redness
• Swelling
• Itching
• Skin lesions

Types of dermatitis, include:

• Contact dermatitis: A rash that results from either repeated contact with irritants or contact with allergy-producing substances, such as poison ivy.
• Neurodermatitis: A chronic itchy skin condition localized to certain areas of the skin.
• Seborrheic dermatitis: A common scalp and facial condition that often causes dandruff.
• Stasis dermatitis: A skin conditin that's caused by a buildup of fluid under the skin of the legs.
• Atopic dermatitis: More commonly known as just eczema of atopic eczema, a chronic itchy rash that tends to como and go.
• Perioral dermatitis: A bumpy rash around the mouth.

Causes:

A number of health conditions, allergies, genetic factors, physical and mental stressors, and irritants can cause dermatitis.

Contact dermatitis

This condition results form direct contact with one of many irritants of allergens.

Commmon irritants include:

• Laundry soap
• Skin sopas of detergents
• Cleaning products

Possible allergens include:

• Rubber
• Metals, such as nickel; jewelry
• Perfume and fragances
• Cosmetics
• Weeds, such as poison ivy
• Neomycin and bacitracin, common ingredients in topical antibiotic creams

It takes a greater amount of contact with an irritant over a longer time to cause dermatitis than it takes for an allergen. Once you're sensitized to an allergen, just brief exposure to a small amount of it can cause dermatitis. Once you develop sensitivity to an allergen, you typically have it for life.

Neurodermatitis

Also known as lichen simplex chronicus, this type of dermatitis typically develops when something has created an itchy sensation in a specific area of your skin. This irritation may lead you to rub or scratch your skin repeatedly in that area. Common locations include the ankle, wrist, outer forearm or arm, and the back of your neck.

Possible underlying factors include:

• Dry skin
• Chronic irritation
• Eczema

Seborrheic dermatitis

This condition causes a red rash with yellowish and somewhat "oily" scales, usually on the scalp and sometimes on the face, especially around the ears and nose. It's common in people with oily skin or hair, and it may come and go depending on the season of the year. It's likely that hereditary factors play a role in this condition.

Possible underlying factors include:

• Physical stress
• Neurological conditions, such as Parkinson's disease

In infants, this disorder is known as cradle cap.

Stasis dermatitis

It can occur when fluid accumulates in the tissues just beneath the skin- typically on your lower legs- due to a sluggish return of blood from the leg veins back to the heart. The extra fluid interferes with you blood's ability to nourish your skin and places extra pressure againts your skin from underneath.

Possible underlying factors include:

• Varicose veins
• Obesity, often extreme
• Other chronic conditions or recurrent infectionts that affect circulation in your legs, such as pregnancy of deep vein thrombosis

Atopic dermatitis

This condition often occurs with allergies and frequently runs in families in which members have asthma, hay fever or eczema. It usually begins in infancy and may vary in severity during childhood anda adolescence. It tends to become less of a problem in adulthood, unless you're exposed to allergens or irritants in the workplace.

Possible underlying factors include a combination of:

• Dry, irritable skin
• A malfunction in the body's immune system
• A genetic tendency for allergic conditions such as asthma, hay fever or eczema

Stress can exacerbate atopic dermatitis, but it doesn't cause it.

Perioral dermatitis

This type of dermatitis may be a form of the skin disorder rosacea, adult acne or seborrheic dermatitis, invloving the skin around the mouth or nose.

Possible underlying factors include:

• Makeup
• Moisturizers
• Topical corticosteroids