+The Secondary Eruption or Rash.+--The eruption of secondary syphilis is generally the feature which most alarms the average patient. It is usually rather abundant, in keeping with the wide-spread character of the infection, and is especially noticeable on the chest and abdomen, the face, palms, and soles. It is apt to appear in the scalp in the severer forms. The eruption may consist of almost anything, from faint pink spots to small lumps and nodules, pimples and pustules, or large ulcerating or crusted sores. The eruption is not necessarily conspicuous, and may be entirely overlooked by the patient himself, or it may be so disfiguring as to attract attention. +Common Misconceptions Regarding Syphilitic Rashes.+--Laymen should be warned against the temptation to call an eruption syphilitic. The commonest error is for the ordinary person to mistake a severe case of acne, the common "pimples" of early manhood, for syphilis. Psoriasis, another harmless, non-contagious, and very common skin disease, is often mistaken for syphilis. Gross injustice and often much mental distress are inflicted on unfortunates who have some skin trouble by the readiness with which persons who know nothing about the matter insist on thinking that any conspicuous eruption is syphilis, and telling others about it. Even with an eye trained to recognize such things on sight, in the crowds of a large city, one very seldom sees any skin condition which even suggests syphilis. It usually requires more than a passing glance at the whole body to identify the disease. If, under such circumstances, one becomes concerned for the health of a friend, he would much better frankly ask what is the matter, than make him the victim of a layman's speculations. It is always well to remember that profuse eruptions of a conspicuous nature, which have been present for months or years, are less likely to be syphilitic.