Contact Dermatitis

Contact dermatitis is an inflammatory skin reaction that appears after the skin comes into contact with an irritant or allergen. It often causes redness, itching, burning, dryness or blisters in areas of direct exposure. ^[1][2]

What is Contact dermatitis?

There are two main types: irritant contact dermatitis, caused by direct skin damage, and allergic contact dermatitis, caused by an immune reaction to a substance the skin has become sensitized to. ^[1][3]

What are the symptoms and what causes it?

Common triggers include soaps, detergents, fragrances, metals such as nickel, rubber chemicals, hair dyes and workplace substances. The rash often reflects the shape or area of exposure. ^[1][2][3]

How is it diagnosed?

Diagnosis is based on the appearance, exposure history and sometimes patch testing when allergic contact dermatitis is suspected. Not every itchy rash is eczema of the same type. ^[1][2]

What are the treatment options?

Treatment usually involves avoiding the trigger, protecting the skin barrier and using anti- inflammatory therapy such as topical corticosteroids when appropriate. Chronic hand dermatitis may need broader occupational review. ^[1][2][4]

Possible complications and when to seek medical care

Ongoing exposure can lead to chronic cracking, infection and major discomfort. Urgent care may be needed if swelling is severe, infection is suspected or the rash involves the face extensively. ^[1][2][3]

What may help in daily life?

Review new cosmetics, cleaning products, gloves and occupational exposures when the rash keeps returning. ^[2][3]

Common mistakes during follow-up

A common mistake is treating the rash without identifying the trigger, which allows the cycle to continue. ^[2][4]

FAQ

What is contact dermatitis?

Contact dermatitis is explained by its symptoms, causes, diagnosis and treatment plan. The most important step is matching the symptoms with the correct medical evaluation. ^[1][2]

When should I see a doctor for contact dermatitis?

Seek medical review if symptoms are persistent, worsening, recurrent or clearly affecting daily life. Urgent review is needed when warning signs or severe symptoms are present. ^[1][2]

Can contact dermatitis improve without treatment?

Some mild cases or symptom flares may settle, but not every condition should be watched at home. Improvement does not always mean the underlying problem has been resolved. ^[1][2]

How is contact dermatitis diagnosed?

Diagnosis usually starts with a medical history and examination, then moves to targeted tests depending on the symptom pattern and suspected cause. ^[1][2]

Why does follow-up matter?

Follow-up helps confirm the diagnosis, assess response to treatment and detect complications or recurrence earlier. ^[1][2]