[Skin tests in chronic hand dermatitis].

Chronic hand dermatitis is often multifactorial but allergic causes are frequent and can complicate atopic dermatitis or irritant dermatitis. The management of patients affected by hand dermatitis includes detailed interrogation and a complete examination of the skin. Allergologic tests must be systematically realized if examination is suggestive of contact dermatitis or protein contact dermatitis, if an occupational origin is suspected but also in all patients in which treatment is ineffective. Skin tests include patch tests with the European standard series, specialized or additional series if necessary. Skin tests may also include personal items used by patients on a daily basis. If protein contact dermatitis is suspected skin tests include prick tests. Only complete and definitive eviction of allergens can allow a complete and definitive cure of chronic hand dermatitis.