Spider nevi

Introduction to spider mites The spider mites are shaped like spiders, with radial expansion of the telangiectus next to the corpus callosum. Spider mites are warning signs of liver failure because spider mites are common in acute, chronic hepatitis or cirrhosis. Spider mites vary in size, the larger ones can reach 1.5cm in diameter, and the central corpus callosum bulges the skin. The slides can be seen in the examination of the slides. The telangiectasia around the corpus callosum can be seen in the radial direction, which is arranged radially, and occurs in the upper part of the trunk. Especially in the face, neck and hand more common, can also occur in the traumatic site, often one side, single, can also be multiple, multiple hair regardless of age should be suspected of liver disease, in the lips, nasal mucosa can occur similar Damage, but lacks obvious typical form. basic knowledge The proportion of sickness: 0.00003% Susceptible people: no specific population Mode of infection: non-infectious Complications: cirrhosis, hepatitis, ulcer disease, congestive heart failure

Spider plague

Hormone factor (35%):

The occurrence of this disease may be related to the increase of estrogen levels. Among them, physiological spider mites account for about 15% of normal people. Most of the patients are pregnant women and liver diseases. About 2/3 of the pregnant women have the damage.

Liver disease factors (45%):

The liver is a regulating and inactivating organ of human sex hormone metabolism, especially estrogen secreted by human sexual organs, which must pass through the liver to weaken or disable the activity. When the liver develops lesions, the inactivation ability of estrogen decreases, resulting in a large accumulation of estrogen in the body, causing the expansion of small arteries in the body.

Pathogenesis:

In liver disease, due to the metabolic disorder of estrogen in the liver, the level of estrogen in the body is increased and it is easy to cause spider mites. The damaged blood vessels are small arteries, and the blood flows from the spider to the periphery and then flows into the capillary network, instead of the anastomotic arteriovenous anastomosis.

Pathological changes

a The center of the lesion is an ascending small artery.

b The artery is ascending to the lower part of the epidermis and expanded into a thin-walled ampulla. The fine arterial branches radiate around the center and are divided into many capillaries.

c The arterial wall is smooth muscle, sometimes containing red blood cells between endothelial cells and the inner elastic membrane.

Spider mites prevention

Prevent liver disease, wash hands before and after meals, and develop good hygiene habits. Pregnant women should take care to avoid possible environmental or drug irritation. For patients with viral hepatitis infection, such as: hepatitis B, hepatitis C, hepatitis D, if the virological examination has a virus replication, you should actively use antiviral drugs, such as the use of Daiding, lamivudine, short-acting interferon, long-acting Interferon (Pyroxin) actively carries out antiviral treatment, and pays attention to regular detection of liver function. People with ALT and AST increase actively carry out liver protection treatment.

1, avoid smoking: harmful substances in cigarettes can directly stimulate the respiratory tract, smoke will bring harm to the health of the surrounding people, so, should completely eliminate tobacco.

Spider plaque complications Complications liver cirrhosis hepatitis ulcer hemorrhagic congestive heart failure

The complications of spider mites are ulcers, hemorrhage, infection, damage to vital organs, congestive heart failure and limb deformities caused by musculoskeletal injuries. If the spider mites invade the cervical vertebrae, symptoms of nerve root compression, such as pain, upper limb sensation and movement disorders, may occur.

Symptoms of spider mites common symptoms skin bleeding point hemorrhagic papules pathological jaundice liver special face

Spider mites vary in size, the larger ones can reach 1.5cm in diameter, and the central corpus callosum bulges the skin. The slides can be seen in the examination of the slides. The telangiectasia around the corpus callosum can be seen in the radial direction, which is arranged radially, and occurs in the upper part of the trunk. Especially in the face, neck and hand more common, can also occur in the traumatic site, often one side, single, can also be multiple, multiple hair regardless of age should be suspected of liver disease, in the lips, nasal mucosa can occur similar Damage, but lacks obvious typical form.

Spider mites are common in acute, chronic hepatitis or cirrhosis, and are also seen in pregnant women and healthy people. The incidence of spider mites in patients with acute hepatitis is about 1%, while that of chronic hepatitis is about 54%. The appearance of spider mites is often parallel with the state of liver function. When the liver function deteriorates, the spider mites can increase sharply; after the liver function is improved, the sputum can change from bright red to brownish black, and then disappear.

Clinical features

The disease can occur on its own, more common in pregnant women, cirrhosis patients and thyrotoxicosis, etc., can also be found in normal children, skin lesions are more common in the face, especially for the underarms, buccal upper parts and front chest and hands, skin lesions It is a red punctate papule with a central protrusion. The red small blood vessels are distributed radially around it. It is like a spider. The transparent slide is lightly pressed and sometimes pulsating. The skin lesions can be seen at the center of the rash. The lesions are often single or can be Multiple, especially when there is liver damage.

Spider licking

In combination with the actual situation of the patient, the examination items will be determined, and the spider mites will have liver function and HBV-DNA examination. If the liver function is abnormal, HBV-DNA positive should be treated as soon as possible. Spider mites vary in size, the larger ones can reach 1.5cm in diameter, and the central corpus callosum bulges the skin. The slides can be seen in the examination of the slides. The telangiectasia around the corpus callosum can be seen in the radial direction, which is arranged radially, and occurs in the upper part of the trunk. Especially in the face, neck and hand more common, can also occur in the traumatic site, often one side, single, can also be multiple, multiple hair regardless of age should be suspected of liver disease, in the lips, nasal mucosa can occur similar Damage, but lacking a clear typical form, pressing the center of the spider's scorpion with a match head can cause the surrounding vascular network to subside.

Diagnosis and identification of spider mites

It is easy to diagnose according to the typical form of pulsating blood vessels in the center of the lesion. It must be differentiated from hereditary hemorrhagic telangiectasia, which has variegated telangiectasia, punctate or linear, and no pulsation. The slide can be seen in the palpation, and the telangiectasia around the corpus callosum can be seen in the radial direction.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.