B. In its more concentrated form it is a powerful escharotic, attacking the tissues violently in consequence of its affinity for their organic bases, as well as for the water with which they are combined, 10, 1: 301.

C. Hyperidrosis, 1, 954; 7, 61.

Furuncles, 201. Pemphigus, 86, 1: 277. Purpura, 6, 383; 210. Lichen, prurigo, urticaria, 13, 36.

D. Chronic eruptions, 1, 955. Scabies, 203.

Remarks

The astringent and tonic properties of sulphuric acid are available in affections of the skin, occurring in debilitated subjects, rather than for any specific action on the skin itself. In the affections above mentioned, more especially hyperidrosis, pemphigus and purpura, it has been superseded by far more efficient remedies.

For external use as a caustic it is sometimes employed in malignant growths, rarely alone, but more frequently made into a paste with finely powdered charcoal or dried sulphate of zinc.

The officinal preparations are Acidun Sulphuricum Dilutum and Acidum Sulphuricum Aromaticum.