Colloidal heat rash is the result of degeneration of dermal collagen and elastic fibers. Skin lesions are more common in exposed parts and may be related to sun exposure. It is generally believed that this disease can be divided into two types: children and adults. The former begins in childhood or adolescence and gradually fades after adolescence. It usually has a family history and may be autosomal dominant inheritance. Adults are often exposed to the sun for a long time, especially tropical outdoor workers.
Colloidal heat rash can be divided into children's type and adult type. Childhood type generally occurs in childhood, and gradually fades naturally after young adults. Adult type is more common, and the patients are mostly middle-aged and long-term outdoor workers, with more men than women. Also known as colloidal pseudomillet, the skin is colloidal degeneration.
A few colloidal miliaria can be frozen or electrocautery, and a small amount of chloroquine and a large amount of vitamin C can be taken. Skin should avoid long-term sun exposure.
2 disease name colloid miliaria
3 English name colloidal millet
④ Colloidal pseudomillet; , another name for colloidal heat rash; Gliosis of skin; Glial pseudomiliary papules; Glial heat rash; Glial barnyard grass tumor; Glial heat rash; Glial degeneration of skin
5 classification dermatology > physical dermatosis > chronic actinic dermatitis.
6 ICD number L74.3
7 The cause of colloidal heat rash The cause of colloidal heat rash is not completely clear. Skin lesions are more common in exposed parts and may be related to sun exposure. It is generally believed that this disease can be divided into two types: children and adults. The former begins in childhood or adolescence, and gradually fades after puberty. It often has family relations and may be autosomal dominant inheritance. Adults are often exposed to the sun for a long time, especially tropical outdoor workers. Oil workers are prone to illness, and colloidal prickly heat tends to be familial, with more men than women.
8 Pathogenesis The pathogenesis of colloidal miliaria is unknown, which may be autosomal dominant inheritance.
The clinical manifestations of colloidal miliaria are hyperkeratosis of epidermis, atrophy of spinous layer and flattening of epidermal ridge. The * * * layer of dermis is obviously enlarged, and there is no colloidal substance with structural uniformity or transparent degeneration in the upper part of dermis. There are normal collagen fiber bundles around, and the boundary is clear. Cracks and a few spindle-shaped ruptured nuclei can be seen in denatured collagen. If stained with HE, colloid is eosinophilic, which is lighter or weaker than normal collagen. PAS staining was positive. Amylase tolerance. Van Giessen staining is yellow. Elastic fibers will break. There is a small amount of lymphocyte infiltration around the colloidal substance.
When children get sick, there are translucent, yellowish, round or non-plastic, flat or mound papules on the exposed parts, which are often symmetrically distributed. It happens on the face and back of the hand, but it also happens on the forehead, cheeks or nose. Papules are slightly harder than the surrounding skin, do not fuse with each other, and are often clustered. After a chronic period, it gradually disappears in adulthood. Generally no symptoms.
In adults, rashes often occur in exposed parts, such as forehead, around eyelids, ears, neck, forearm and back of hand. In addition to a few large transparent papules, pale yellow, orange or normal skin nodules or plaques can be seen. Small pits or scabs can be seen at the top of the former. Sometimes telangiectasia can be seen on the plaque. After chronic. Old people who often bask in the sun are prone to hair loss, and men are more than women. Sometimes I feel a little itchy.
10 The diagnosis of colloidal miliaria is easy to diagnose according to the rash manifestations and pathological changes of colloidal miliaria.
/ Epidermal cyst can be seen in the upper dermis.
1 1.2 The papules of lichen planus are red or purplish red, opaque, and there is no colloidal substance in the papules, which are easy to occur on the flexion side of the forearm, with severe itching. The basal cells are liquefied and denatured, and the cells between epidermis and dermis are banded and infiltrated without colloidal substances.
1 1.3 cutaneous amyloidosis The rash of cutaneous amyloidosis is light brown, round or hemispherical, with stretched legs and severe itching. There is amyloid deposition in the rash. Congo red staining was positive. Van Giessen staining is red, and methyl violet staining is purplish red.
Treatment of colloidal miliaria with 12 A few skin rashes of colloidal miliaria can be frozen or electrocautery. In addition, you can also take a small amount of chloroquine and a large amount of vitamin C.
Prevention of colloidal miliaria 13 Avoid long-term sunlight exposure to the skin.
14 related drugs collagen, chloroquine and vitamin C.
15 amylase and vitamin c related examination.
The acupoints for treating colloidal miliaria are all overflowing, and the degree of pain outside the chest, hypochondrium, waist, abdomen and knees is low, so the treatment is mainly overflowing. The strong wind made my eyes ache, and my body was hot and painful. The pain in the basin was short-lived and I was crying. If the moon is bad, you will lose if you see blood. ...
Hegu