Prurigo black rash
Introduction
Introduction to black rash Prurigo is a group of acute or chronic inflammatory pruritic skin diseases, and black pruritus is an acute form of acute itch. Occurs in children and young children. The most infants after weaning, Hebra's Prurigo (Prurigo Hebra), adult pruritus, nodular pruritus, winter pruritus, pregnancy pruritus, etc., clinically characterized by dome papules, mossy nodules and itching skin disease. basic knowledge The proportion of illness: 0.001% Susceptible people: good for children Mode of infection: non-infectious Complications: Eczema
Cause
Nebrabra rash
(1) Causes of the disease
It is not clear that the causes of pruritus may be different in different stages. Acute pruritus is often an allergic reaction after insect bites; subacute pruritus occurs in middle-aged and elderly women, and is mostly related to neuropsychiatric factors; chronic pruritus may be special Hairy or related to many underlying conditions.
(two) pathogenesis
It is not clear that acute pruritus often causes allergic reactions after insect bites; subacute pruritus occurs in middle-aged and older women, and is mostly related to neuropsychiatric factors; chronic pruritus may be idiopathic or associated with many underlying conditions.
Prevention
Black rash rash prevention
1. Remove the cause, give corresponding treatment to the accompanying disease, limit candy, add fresh vegetables and fruits, and strengthen nutrition for those who are malnourished. The place should be kept dry, the air is smooth, the life is regular, and the child has enough rest.
2. Early diagnosis, early treatment.
Complication
Hebrew pruritus complication Complications eczema
Clinical maturity: long-term scratching can occur scratches, blood stasis, pigmentation, mossy, there may be secondary eczema-like changes or suppurative infection.
Symptom
Black rash pruritus symptoms common symptoms irritability, weight loss, papules, knots, wheal
1. Occurs in infants and infants 1 to 2 years old, especially infants after weaning.
2. Clinically divided into two phases
(1) Early onset: When it occurs more than 8 to 10 months or 1 to 2 years old, it is a wheal-like erythema, or a pale red flat papule. When it is hidden, it is repeated, gradually increasing, and spreading throughout the body.
(2) maturity: more than 2 to 3 years old, more and more skin lesions in early-onset, forming a typical pruritus nodule, which is a large nodule of rice to sorghum, reddish brown, brownish yellow or normal skin. Can be higher than the leather surface or trapped in the skin, long-term scratching can occur scratches, blood stasis, pigmentation, mossy, there may be secondary eczema-like changes or purulent infection.
3. Occurs in the extremities of the extremities, especially the lower extremities, often accompanied by inguinal lymphadenitis, but never purulent, severe skin lesions throughout the body, often accompanied by malnutrition, weight loss, anemia and gastrointestinal dysfunction, The child is restless.
4. Consciously itchy, recurrent, puberty can be relieved or self-healing.
5. Histopathology: It is a general inflammatory tissue image with no specific changes.
Examine
Blackbrach pruritus examination
Histopathology: It is a general inflammatory tissue image with no specific changes.
Diagnosis
Diagnosis of black rash pruritus
Differential diagnosis
1. Papular urticaria: Early symptoms, skin lesions are similar, but the disease rash has a central blister, hard and transparent, after a short, no secondary moss.
2. Chronic eczema: Similar to the secondary damage of long-term Hebra pruritus, but this disease has a history of acute eczema, skin infiltration and hypertrophy, tend to be moist, easy to re-emerge, no part, more common in the flexor, no lymph nodes Swollen, not related to the age of the season.
3. Hemorrhoids: co-residents are easily infected, spread quickly, have finger joints, wrists, waist and other special hair-prone parts, typical acne nodules in the perineum, severe itching at night, you can see .
