Baby with yellow crusts on scalp
Introduction
Introduction Seborrheic dermatitis crusting type: It is a greasy stick with yellow crusting, intervening or exudate, which is more common in infants. Seborrhoeic dermatitis refers to hypersecretion of the sebaceous glands. It is characterized by scalp fatty, greasy and shiny, and more desquamation. It is more likely to occur in the developed parts of sebum. It is a chronic inflammation that occurs on the basis of seborrhea. The damage is bright red or yellowish patches with oily surface. Scales or suede, often accompanied by varying degrees of itching, more common in adults, can also be found in newborns.
Cause
Cause
The cause of yellow crusting on the baby's scalp:
The cause is not yet clear. This disease is a secondary inflammation of the skin caused by seborrhea. It is speculated that due to increased sebum secretion and changes in chemical composition, a large number of normal flora originally present on the skin, such as Ophiopogon japonicus, grow and multiply invade the skin; in addition, a large amount of sebum is present in the original The action of non-pathogenic microorganisms on the skin, such as corynebacterium acne, breaks down free fatty acids and irritates the skin to cause inflammation.
In addition, mental factors, eating habits, vitamin B deficiency, alcohol abuse, etc. may have a certain impact on the occurrence and development of this disease.
Examine
an examination
Related inspection
Growth and development test of skin lesions
The baby's scalp has a yellow scar diagnosis check:
The disease occurs in areas with more sebaceous glands, such as the scalp, face, back, armpits and perineum. The skin lesions are as follows.
Scalp scale: a small piece of gray-white squama to a layer of greasy scales with a light red spot or a large dark red hair follicle papule.
Crust type: It is a greasy stick with yellow crusting, intervening or exudate, which is more common in infants. Gray scales or jaundice on the face and eyebrows, thick folds can be accumulated in the folds of the nose.
Yellow thick sputum with cleft palate can be seen in the auricle, external auditory canal, and behind the ear.
Round, oval-shaped patches with a reddish torso and covered with scales or greasy sputum.
Wrinkles such as under the breast, underarms, and groin may have yellow patches, sometimes with a ring-shaped edge, often smashed by friction.
The patient has scalp itching and dandruff for a long time. The forehead and eyebrows often have gray-white scales and jaundice, itching, and self-identification is seborrheic dermatitis.
Diagnosis
Differential diagnosis
Baby scalp has yellow crusting and confusing symptoms:
1. Psoriasis of the head and face: The damage is dispersed into flakes, the boundary is clear, the scales are thick, the touch is uneven, the hair does not fall off, the short hair gathers into a bundle, and the heavy damage can be connected into a large piece, extending to the front hairline Invaded the forehead a few centimeters. Scratch the scales with a film phenomenon (ie, the scales are scraped off, under which is a red shiny film) and bleeding phenomenon (ie, the light scratch film can appear scattered at small bleeding points), film phenomenon and bleeding phenomenon is important for psoriasis damage feature.
2, rose pityriasis: occurs in the neck, trunk, proximal limbs, oval-shaped rash, the center is slightly yellow, the edge is slightly elevated, pale red, with white squama-like scales. From the beginning, it is a single lesion, called the mother spot; the mother spot is gradually larger, the diameter can reach 2~5cm or more, sometimes there are 2~3 mother spots at the same time, and after 1~2 months, small erythema appears successively. Occurred in the trunk, the long axis of the rash is consistent with the skin pattern, usually 4 to 6 weeks can self-resolve, no recurrence.
3, body sputum: damage edge bulge and narrow. The realm is clear, and there is a ring-shaped damage that the central healing expands to the surroundings. Itching is obvious, patients often have a history of hand and foot hyperthyroidism.
4, erythematous pemphigus: mainly distributed in the face, neck, chest and back in the middle. Beginning on the face with symmetrical erythema, overlying scales and scarring, blister on the back of the neck and chest and back erythema, the formation of suede after rupture, Nie's sign positive. (ie, applying pressure on the blister top, you can see the blister infiltration into the surrounding epidermis; pulling the residual wall of the blister wall, causing further exfoliation of the surrounding epidermis; more importantly, the skin with normal appearance is also rubbed and broken).
5, slag-like dermatitis: does not involve the scalp. Eyebrows and nasolabial folds are not good sites, and there are many medications for long-term external application of hormone preparations.
