Lues - chronic venereal disease; it is transferred mainly sexual by; has recurring current with a characteristic periodization of clinical signs.

Etiology. A source of infection - the person sick of a lues especially having active displays of a fresh lues on a skin and mucosas. Rashes with a wet, soaked surface are most infectious, in separated which a plenty of the originator contains. The basic way of infection - a straight line (usually sexual) contact to patients. The so-called household lues (infection through household goods) is possible also. At a congenital lues infection occurs fetally - through vessels of a placenta.

Clinical picture. At uncured patients allocate 4 periods of the got lues: incubation, primary, secondary and tertiary. The incubation interval (from infection before occurrence of the first clinical sign - a hard ulcer) lasts on the average 20-40 days. Probably as its shorting (5-7 days), and elongation (3-5 months).

The primary period (from occurrence of a hard ulcer before occurrence of the first rash) lasts 6-8 weeks. Three signs are typical: a hard ulcer, a regional lymphadenitis and a regional lymphangitis. The hard ulcer represents erosion or a ulcer. At sexual infection the hard ulcer settles down on genitals (at men more often on a balanus or a prepuce, at women - on sexual labiums, a neck of a uterus). For a hard ulcer following attributes are characteristic: the small sizes (up to a fine coin), correct spherical or oval outlines, flat edges, a smooth is cyanotic-red bottom with poor separated, a dense elastic (cartilaginoid) infiltrate in the basis. The uncomplicated hard ulcer is painless, is not accompanied by the phenomena of an acute inflammation. Deviations from the described clinic are frequent. The hard ulcer can be very small or very large (a nanous and huge hard ulcer), its bottom can be covered by necrotic Membranula or a cortex (a cortical hard ulcer). Meet plural (up to several tens) and morbid (proctal and urethral) hard ulcers.

The secondary period (from the first rash before occurrence of tertiary syphilides - eminences or gummas) lasts 3-4 years. Organs and systems can be amazed all, however the basic displays are presented by an eruption on a skin and mucosas (syphilides of the secondary period). The first rash going on change to the healing hard ulcer, happens the most plentiful (a secondary fresh lues), to it are accompanied with the expressed polyadenitis. The eruption keeps some weeks (less often 2-3 months), then acritical time disappears Pa. Repeated episodes of rashes (a secondary recurrent lues) alternate with the periods of full absence of displays (a secondary latent lues). The eruption at a secondary recurrent lues is less plentiful, is inclined to a grouping.

The tertiary period of a lues begins more often on 3-4-м to year of illness and at absence of treatment lasts up to the extremity of a life of the patient. Its displays differ the greatest gravity, lead to an indelible disfiguration of appearance, an invalidism and is frequent to mors. Syphilides of the tertiary period are presented by two elements - eminences and units (gummas), eminences is usual in big, quantity settle down in a depth of a skin and look like ball-shaped dense formations of is cyanotic-red color, smooth, precisely circumscribed, size about a cherry ossicle. They do not give subjective sensations, settle down usually groups on any site of a skin, never merge, quickly enough become ulcers, and then heal, leaving the original ("mosaic") cicatrixes painted on periphery.