erythema multiforme rash
Introduction
Introduction to polymorphic erythematous rash Polymorphous erythema is an acute self-limiting inflammatory skin disease, often associated with mucosal damage, rash is pleomorphic, typical damage is target or iris-like damage. Can be caused by a variety of reasons, can be related to infected bacteria, viruses (especially herpes simplex virus), enzymes, protozoa, but also some drugs, such as sulfonamides, barbiturates, salicylates and biological products It is ill, and people are related to the cold. basic knowledge The proportion of illness: 0.03% Susceptible people: no special people Mode of infection: non-infectious Complications: bacterial infection
Cause
Polymorphic erythematous rash
The etiology of polymorphic erythema has not been fully understood so far, but is generally considered to be a skin disease caused by allergies. In recent years, the relationship between this disease and herpes simplex virus has attracted attention. It has been pointed out that more than 30% of patients with erythema multiforme are caused by herpes virus and have been confirmed by experiments, that is, after intradermal injection with herpes simplex virus antigen, it can cause the disease. In addition, some cases are often caused by sulfa drugs, antipyretic and analgesics, sedative sleeping pills, antibiotics, etc.; some patients with chronic disease infections, such as tonsillitis, otitis media, sinusitis, Chronic attachment inflammation and other related; some are one of the clinical symptoms of the disease in the body, such as rheumatic fever, typhoid fever, wave heat, infectious mononucleosis, malignant granuloma and various malignant tumors can be accompanied by polymorphic erythema Some patients are caused by eating daily food such as fish, eggs, etc.; and the reason for a considerable number of diseases is still difficult to ascertain.
Prevention
Polymorphous erythematous rash prevention
Prevention and control of infection, protective isolation, because the child is easy to concomitant infection, those who live in a single room or live in a room with infected children, open the door and window regularly, and disinfect with a dynamic air disinfection machine 2 times, 2 h / Keep the room temperature at 24~26°C, keep the child in a state of no sweat or sweat, strictly control the number of accompanying persons and the number of visits, wet the floor of the ward with chlorine-containing disinfectant 1~2 times/d and wipe the bedside table. Chairs, doors and windows 1 time / d, sheets, quilt cover and clothing are used after autoclaving, and timely replacement, is served with cotton products, all treatment, inspection and care, medical staff wash hands in time, and use Xin Jie Ling Spray hands disinfection, thermometer, sphygmomanometer and other items fixed use, and related education for family members, no cases of this group of concurrent infection.
Complication
Polymorphous erythematous rash complications Complications bacterial infection
Can be infected concurrently.
Symptom
Polymorphous erythematous rash symptoms Common symptoms Nausea diarrhea Abdominal pain Diabetes metabolic acidosis Drowsiness Ambiguity Hypotension Muscle Sticky exudative film
Polymorphic erythema often occurs in the spring and autumn, and often begins to get sick. Prodromal symptoms include hypothermia, headache, limb weakness, joint and muscle soreness. Some patients may be susceptible to herpes simplex or upper respiratory tract infection at the same time or before the onset of illness. The rash occurs in the face and neck and the distal extremities. The mucous membranes such as the mouth and eyes can also be affected. Skin lesions showed pleomorphism, including erythema, maculopapular rash, blisters, bullae, purple spots and wheal, but plaque and erythema were the most common. Typical damage color is internal UV red, and blisters can appear in the center. The appearance is very peculiar, and the rashes are clearly defined in the shape of the target. This is the so-called iris-like lesion. Seeing such a rash is helpful for diagnosis. Itching or mild pain and burning sensation in the affected area. In the onset of the disease, there is generally no obvious systemic symptoms, the course of the disease is self-limiting, and the skin lesions are expected to subside after about 2 to 4 weeks, but often relapse.
In the onset of the disease, there is generally no obvious systemic symptoms, the course of the disease is self-limiting, and the skin lesions are expected to subside after about 2 to 4 weeks, but often relapse. According to the principle of syndrome differentiation, the disease can be treated by wind, cold blood type, blood heat type and damp heat type, which can often work. Body lice, when the skin is infected by various skin mites (also known as fungi), ring rash can occur, itching is unbearable, the periphery of the rash is expanding, there are small blisters, crusting, thickening, running water, often in the groin , armpits, breasts or hips, mostly infected by hand and ankle, but also infected with cats and dogs that are sick. If the disease is in the foot, it is an ankle, commonly known as foot moisture or Hong Kong foot, which is manifested as itching, and the toe is white, smashed, or thickened and peeled.
Examine
Polymorphous erythematous rash examination
Polymorphic erythema often occurs in the spring and autumn, and often begins to get sick. Prodromal symptoms include hypothermia, headache, limb weakness, joint and muscle soreness. Some patients may be susceptible to herpes simplex or upper respiratory tract infection at the same time or before the onset of illness. The rash occurs in the face and neck and the distal extremities. The mucous membranes such as the mouth and eyes can also be affected. Skin lesions showed pleomorphism, including erythema, maculopapular rash, blisters, bullae, purple spots and wheal, but plaque and erythema were the most common. Typical damage color is internal UV red, and blisters can appear in the center. The appearance is very peculiar, and the rashes are clearly defined in the shape of the target. This is the so-called iris-like lesion. Seeing such a rash is helpful for diagnosis. Itching or mild pain and burning sensation in the affected area. In the onset of the disease, there is generally no obvious systemic symptoms, the course of the disease is self-limiting, and the skin lesions are expected to subside after about 2 to 4 weeks, but often relapse.
Diagnosis
Diagnosis and diagnosis of polymorphous erythematous rash
According to the disease, the polymorphic rash and the predilection site are not difficult to diagnose. However, it should be differentiated from frostbite, drug eruption (polymorphic erythema), herpes-like dermatitis, and body lice.
