What does chancre look like? The easiest way to distinguish hard chancre

With the increasing openness of modern people towards sex, more and more people have an open concept of human nature, but with it comes various sexual diseases. Under an open concept, there is also a need for moderation and principles, so as not to attract sexual diseases. Hard chancre is a symptom of early syphilis, so what does hard chancre look like? What is the easiest way to distinguish hard chancre?

What does chancre look like?

1. At first, it was a small erythema that rapidly developed into a painless inflammatory papule. Within a few days, the papules expand and form hard nodules, with surface necrosis, forming circular or elliptical painless ulcers with a diameter of 1-2 cm.

2. The boundary is clear, with surrounding edema and swelling, with a fleshy red base and serous secretions on the surface.

3. The therapist subsides after 1-2 weeks, leaving deep red light scars or pigmentation. Some patients exhibit genital mucosal erosion or multiple ulcers, with purulent secretions occurring during bacterial infections.

4. Hard chancre is a typical skin lesion of syphilis. Its nature is that the ulcer is on the surface of the ulcer, with a hard finger texture called cartilage hardness, which is a sensation of hardness when touching the tip of the nose. The lower finger area is prone to growth in the external genitalia.

What is the easiest way to distinguish hard chancre?

1. The diagnosis is based on chancre (primary syphilis)

① The incubation period for a history of unclean sexual intercourse is 3 weeks;

② Typical symptoms often occur in the external genitalia, such as single painless chancre; ③ Laboratory examination: PCR detection of Treponema pallidum gene positive or dark vision microscopy detection of chancre, detection of Treponema pallidum; Syphilis serum test positive. One of these three tests is positive.

Differential diagnosis:

① Genital herpes: Initially, it is a slightly convex erythema, which forms clusters of small water blisters 1.2 days later. It is consciously itchy and painful, not hard, and can subside after 1-2 weeks, but is prone to recurrence. The tissue culture was a simple herpes virus, and the Tzank smear test was positive. PCR detected herpes virus DNA as positive.

② Purulent skin disease: The pathogen is Staphylococcus aureus or Streptococcus. The shape of the skin injury is similar to that of a hard afternoon, but there is no typical cartilage hardness, no deep red infiltration around, no history of unclean sexual intercourse, and a negative result from a syphilis spiral examination. Nearby lymph nodes may swell, but skin damage may subside.

③ Soft ptosis: It is also one of the sexually transmitted diseases, with a history of sexual contact, caused by Haemophilus duckley. Short incubation period (3-4 days), acute onset, obvious inflammation, pain, soft nature, frequent skin damage, surface purulent secretions, and negative serum tests for Haemophilus ducklei and syphilis can be detected..