Source:  Syphilis    Tag:  latent period definition
Syphilis is a disease transmitted by sexual spiral bacterium Treponema pallidum causes. Transmission of syphilis is almost always sexually transmitted, although there are examples of cases of congenital syphilis by transmission from mother to child in utero or at birth.
The signs and symptoms of syphilis are many, so before the serological test was born, the exact diagnosis of syphilis is very difficult because it is often mistaken for other diseases, especially in the third period.

Syphilis can be treated with antibiotics such as penicillin. If untreated, syphilis can cause complications for the heart, aorta, brain, eyes, and bones, in some cases can cause death.
Syphilis developed in four phases: Phase 1, Phase 2, the incubation period and third period:
Phase 1: This is a very important phase for detection and timely treatment. Approximately 3-90 days after exposure to human pathogens (median 21 days), skin lesions appear at the points of contact. Ulcers occur in areas exposed to the syphilis bacteria twisted, usually in the genitals as big lips, her lips, vagina, cervix, circumcision, penis or rectum. Casualties This business, known as the Lower Orange, is a form of ulceration, is characterized by agriculture, round or oval sizes 0.3 to 3 cm, The smooth, red, no itching, no pain, no pus; infiltration bed sores hard and swollen lymph glands accompanied by two groin area, hard and painless. These symptoms can disappear after 3 to 6 weeks even without treatment, many people mistakenly is actually cured but the bacteria into the blood at that time, patients continued with the development of other manifestations.
Phase 2: Phase 2 occurs 4 to 10 weeks after stage 1. This phase has many different manifestations, for example: note the symmetry, such as peach pink (peach) and do the full body itching or extremities including the palms, feet, image dig the red or pink rose petals, such as training, publications in the loss, not floating high above the Skin, scaly and flaking not go away. The two networks are often localized flank, chest, abdomen, upper limb. Training Committee appeared gradually within 1 to 2 weeks, survival did not change within 1 -3 weeks and then gradually faded away.
Or disease can cause the array of matched, note the water burns, sores in the skin and mucous membranes. Array of products, all kinds, many different sizes, such as using peanuts, nails gim, or production of liken, clear boundaries, such as cherry red, not linked to each other, often scaly and flaking edges skin around the property, if available will be linked together to form an array, or schistosomiasis, the production in skin friction due to many crops may be out, running water, the water contains a lot spiral bacteria, so highly contagious when in contact with these patients. Stainer pus and the less common types of training available, mainly in alcoholics, looks like the shallow and deep skin infection with pus. In the wet areas of the body (usually the vagina or scrotum), rash becomes flat, wide, white, or other lesions like warts. Other symptoms common at this stage include fever, sore throat, fatigue, weight loss, headaches, swollen lymph glands. Some rare cases can include inflammation of the liver, kidney, arthritis, periostitis, optic neuritis, uveitis, and interstitial keratitis. These symptoms usually disappear after 3-6 weeks.

Latent period : Latent syphilis is defined as serological evidence of disease but no signs or symptoms of disease. This stage is divided into two types: latent period of less than 1 year after stage 2 (early) and latent period longer than one year after Phase 2 (late). Early latent syphilis may relapse of disease symptoms, late latent syphilis, asymptomatic and not contagious in early latent syphilis.

Phase 3:  Three stages of syphilis can occur between 3-15 years after symptoms first period and were divided into three different forms: neurological syphilis (6.5%), cardiovascular syphilis (10% ) and tubers syphilis (15%). People with syphilis is not infectious stage.

* Cu syphilis occurs from 1-46 years after infection (median 15 years), are spherical or plane asymmetry, red plum, slightly purple, maize grain size, density would , clear boundaries, the tubers syphilis benign evolution are not necessarily necrotic atrophy or necrosis or create ulcers, slow healing and less infection than after regular from scarring. If bulbs, including localized in important institutions and will not be treated life-threatening patients.
* Syphilis is a neurological disease-related central nervous system. It may happen soon: there are no symptoms or clinical signs in meningitis, or the separation of cerebrospinal fluid changes were obvious clinical symptoms and crude fiber. Or the occurrence of late: to cause injury than meningitis, cerebral, and localized brain damage or degenerative brain injury. Nervous syphilis usually occurs 4-25 years after infection. It can cause debilitating depression, confusion from time to time consciousness, seizures, stroke, or causing the illusion to the patient.
* Cardiovascular syphilis usually occurs 10-30 years after infection. The most common complication is aneurysm.