Basal cell carcinoma arising in a localized linear verrucous epidermal naevus.

dermatitis or bacterial and mycological infections (1). BTXA has been used recently to treat focal hyperhidrosis (gustatory sweating, palmo-plantar and axillary hyperhidrosis) (4, 5). There are no data available for the treatment of stump hyperhidrosis. We used BTXA for stump hyperhidrosis in a dosage comparable to that used in palmar hyperhidrosis, i.e. 100 U of Botox. The treatment was very effective not only for focal hyperhidrosis of the stump but it also showed a preventive effect on the associated eczema. In another study with tap water iontophoresis for hyperhidrotic hand eczema, it could be demonstrated that effective treatment of hyperhidrosis is an important factor for prolongation of disease-free interval in atopic eczema and contact dermatitis (9). Further studies should be performed to investigate this positive side-effect of hyperhidrosis treatment.