Redness, dryness, and itching on the hands are familiar to anyone who works a lot with their hands. Dermatitis is inflammation of the skin at the site of direct exposure to an external factor, and the hands are affected more often than other areas.
What Is Hand Dermatitis
Dermatitis is inflammation of the skin where an external physical or chemical factor acts directly on it. In medicine, the term "contact dermatitis" is accepted for this group, while lesions from other causes are classified as toxidermias.
Contact dermatitis is a type of eczema, a group of conditions with dry and irritated skin. A reaction is possible on any area, but most often on the hands and face. The shade depends on skin tone: light skin turns red, dark skin looks dark brown, purple, or gray.
Types of Hand Dermatitis: Contact, Allergic, Atopic
Irritant contact dermatitis is the most common, and there is no allergy in it. The skin reacts to irritants and friction: acids, alkaline compounds such as soap and detergents, fabric conditioners, solvents, and other chemicals. An aggressive substance causes a reaction after brief contact, a mild one after repeated contact. In atopic dermatitis, the risk of this variant is higher.
Allergic contact dermatitis is less common and is triggered by an immune response. There is no reaction on first contact; it comes with subsequent ones. The body can tolerate a substance for years, and after sensitization the allergy remains for life. The delay is usually 24–48 hours, and the rash persists for weeks after contact ceases.
Atopic dermatitis is the most common type of eczema, often hereditary, associated with asthma and hay fever.
Symptoms: What Dermatitis Looks Like on the Fingers, Palms, and Hands
The skin becomes itchy, dry, and cracked, and blisters appear. The reaction occurs several hours or days after contact. With allergy, the itching can be severe, and the rash is red, streaky, or patchy exactly where the substance touched the skin.
- dryness, redness, and roughness — a typical pattern of irritant dermatitis;
- cracks and fissures on the hands with repeated contact with irritants;
- red bumps that can become moist, oozing blisters;
- burning or pain in addition to itching — a sign of irritation, not allergy;
- peeling, oozing, and thickening of the skin in a prolonged course.
Hand Dermatitis and Protective Gloves
In irritant dermatitis, cracks may appear on the hands. Sweating under gloves worsens symptoms, and rubber gloves and latex can be both an irritant and an allergen.
Causes and Triggering Factors
Most often the culprits are irritants: soap, detergents, solvents, and regular contact with water. The same list includes cement, hair dyes, pesticides, weed killers, rubber gloves, and shampoos.
Allergens are a separate story: adhesive compounds, topical antibiotics, balsam of Peru, fabrics and dyes, fragrances in perfumes and cosmetics, nail polish, nickel and other metals in jewelry and hardware, latex, and preservatives in topical products. Some substances react only under the sun: certain aftershave lotions, sunscreens, sulfonamide ointments, perfumes, and lime peel oil.
Besides chemicals, simple dermatitis is caused by mechanical irritants, high and low temperatures, ultraviolet light, electric current, and prolonged wearing of respirators.
How the Diagnosis Is Made and When a Dermatologist Is Needed
The diagnosis is based on examination and questioning about contact with substances. For a prolonged or recurring reaction, a patch test is done: patches with possible allergens are applied to the skin. There are at least three visits — the patches are removed after 48 hours, the third visit about two days later looks for a delayed reaction, and for metals the final visit may be on the tenth day. The test is performed by a specialist able to read the results. Additionally, a skin biopsy or culture may be done.
People see a doctor for persistent, recurring, or severe symptoms. A referral to a dermatologist is given if the culprit substance cannot be found or the symptoms do not respond to treatment.
Hand dermatitis by itself is not a reason to call an ambulance. 103 or 112 — if a life-threatening condition develops alongside the skin reaction: signs of stroke or heart attack, severe injury.
The material is for reference and does not replace a doctor's consultation: it is impossible to make a diagnosis from a description, and it is wiser to deal with hand skin together with a dermatologist.
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This content is for reference and does not replace a doctor's consultation. Medical disclaimer