has suggested a resemblance to "bathing-tights." The congenital growth rarely increases in extent, except as the body grows larger, but often the pigmentation becomes more pronounced and the hair begins to grow coarser in adult life. The development of small hairy moles upon the face of elderly
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Fig. 29.
women, especially those suffering from hypertrichosis, is very frequently noted.
In the treatment of the pigmentary mole, acids or the electrolytic needle may be employed. For small, round, dark spots on the skin a minute drop of nitric acid, applied with a wooden toothpick, will often suffice to remove the blemish. In case of larger pigmented patches, either smooth or covered with fine hair, the surface of the skin may be dotted with the acid; but
