Repeated exposure to low-grade irritants such as water, soaps, and detergents leads to chronic cumulative irritant dermatitis.Īllergic contact dermatitis may be difficult to distinguish from constitutional forms of hand dermatitis and irritant contact dermatitis.Acute irritant contact dermatitis is due to injury by potent irritants such as acids and alkalis, often in an occupational setting.Irritant contact dermatitis often spares the palms. The finger-webs are the first place to be affected, but inflammation can extend to fingers, the backs of the hands and the wrists. The hands are the most common site for irritant contact dermatitis and are often due to wet work and repeated exposure to low-grade irritants. Fingertip dermatitisįingertip dermatitis can be isolated to one or several fingers.
It can appear similar to palmar psoriasis but is less red and less well circumscribed. Hyperkeratotic hand dermatitis is a chronic, dry, non- inflammatory palmar dermatitis. Chronic relapsing vesiculosquamous dermatitisĬhronic relapsing vesiculosquamous dermatitis is a common pattern of palmar and finger dermatitis, in which episodes of acute vesicular dermatitis are followed by chronic scaling and fissuring. It is likely this form of dermatitis is exacerbated by excessive sweating ( hyperhidrosis) such as in hot and/or humid weather and with emotional stress. Vesicular hand dermatitis is also known as pompholyx. Intensely itchy crops of skin-coloured blisters arise on the palms and the sides of the hands and fingers. Other sites of the body may or may not be affected. Discoid eczemaĭiscoid eczema ( nummular dermatitis) tends to affect the dorsal surfaces of the hands and fingers as circumscribed plaques. Patients will typically have signs of atopic dermatitis elsewhere such as in the flexures.
It may manifest as a discoid or vesicular pattern of eczema. It usually involves the backs of the hands and around the wrists.
SKIN RASHES THAT ITCH ONLY ON HAND SKIN
Ītopic hand dermatitis is due to impaired skin barrier function and is triggered by contact with irritants. Ĭontact allergy is a delayed hypersensitivity reaction with elicitation and memory phases involving T lymphocytes and release of cytokines. In atopic dermatitis, a deficiency in or defective function of the filaggrin protein in the stratum corneum leads to barrier dysfunction resulting in water loss and easy penetration by irritants and allergens. Water loss and inflammation lead to further impairment of barrier function. These can damage the outer stratum corneum, removing lipids and disturbing the skin’s barrier function. Irritants include water, detergents, solvents, acids, alkalis, cold, heat and friction. Hand dermatitis is frequently caused or aggravated by work when it is known as occupational dermatitis.
Hand dermatitis often results from a combination of causes, including: This is mainly due to contact with irritants, but specific contact allergies can contribute. Hand dermatitis is particularly common in industries involving wet work or exposure to chemicals such as cleaning, catering, metalwork, hairdressing, healthcare, housework, painting and mechanical work. Ĭhronic hand dermatitis is estimated to affect 10–15% of the population. It is particularly prevalent in people with a history of atopic dermatitis. It may occur at any age, including during childhood. Hand dermatitis is common, especially in young adult females, and accounts for 20–35% of all forms of dermatitis.
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