. The ready-reference handbook of diseases of the skin. skin, or an erythemato-papular eruption. Arsenic causes erythema of scarlatina type, papules, pete-chia, urticaria, vesicles, pustules, herpes zoster, and an ery-sipelatous eruption. Itching may attend some of theseeruptions, and grayish or brownish discolorations of the skinhave followed prolonged ingestion of the drug. Boils andcarbuncles have also been produced, as well as thickening ofthe skin of the palms and soles, and that over the knuckles. Belladonna produces a scarlatinal eruption with or with-out vesicles and pruritus. As the f
. The ready-reference handbook of diseases of the skin. skin, or an erythemato-papular eruption. Arsenic causes erythema of scarlatina type, papules, pete-chia, urticaria, vesicles, pustules, herpes zoster, and an ery-sipelatous eruption. Itching may attend some of theseeruptions, and grayish or brownish discolorations of the skinhave followed prolonged ingestion of the drug. Boils andcarbuncles have also been produced, as well as thickening ofthe skin of the palms and soles, and that over the knuckles. Belladonna produces a scarlatinal eruption with or with-out vesicles and pruritus. As the fauces are often reddenedthe resemblance to scarlatina is striking. It will clear upin twenty-four hours, and the eruption is patchy, not , there is none of the prodroma of scarlatina, northe strawberry tongue. The pupils may be dilated. DERMATITIS MEDICAMENTOSA. 147 Bromine, in combination with potassium, ammonium, andother salts, produces the well-known bromic acne ,J so com-monly seen in the treatment of epilepsy. It is an outbreak. Bromide of potassium eruption in a child. of dark-red inflammatory papules, papulo-pustules, andcutaneous abscesses that bear a close resemblance to acne,and, like it, often leave scars. It differs from acne in hav-ing a wider distribution, and in occurring at all ages. Thisis the most common form of bromine eruption, but erythe-matous, urticarial, papular, ulcerative, verrucose, vesicular,and bullous eruptions have been met with. Rarer formsare papillary hypertrophy, resembling condylomata, andlarge, irregular, elevated ulcers. It would be desirable toprevent these eruptions, but thus far there is nothing thatwill do so with certainty, except stopping the administrationof the drug. Arsenic, or sulphide of calcium, or aromaticspirits of ammonia may be tried. Calx sulphurata gives rise to vesicles, pustules, and fur-uncles ; rarely to petechise. Cannabis indica caused a vesicular eruption in one case. 148 DISEASES OF THE SKIN. Cant
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