Cystic acne, sebaceous cysts, and boils are very similar in appearance, and in some periods they are raised red pimples, which are easy to be confused when encountered
First, distinguish from the **.
1.Cystic acne: It is a chronic inflammatory disease of the sebaceous gland unit of the hair follicle, and it is the more serious type of acne rash. The main causes are exuberant male hormones, excessive sebum secretion, abnormal keratinization of the sebaceous ducts of hair follicles, overgrowth of P. acnes, inflammatory reactions, excessive immunity, mental stress, mood, etc.
2.Sebaceous cyst: It is a retentive cyst formed by the blockage of the sebaceous ducts and the inability of sebum excretion, which is mainly caused by the blockage of the sebaceous excretory ducts.
3.Furuncles: Acute purulent inflammation of the tissues that occur deep in and around the hair follicles, caused by bacterial infections, most often by Staphylococcus aureus and a few by Staphylococcus albicans, and may also be associated with weakened immunity.
2. Distinguish from clinical manifestations.
1.Cystic acne: It tends to occur in areas with strong sebum secretion, such as the face, chest, and back. It usually does not occur alone, but is accompanied by other skin lesions of acne. Acne lesions usually develop gradually, beginning with whiteheads and blackheads, which gradually worsen to form inflammatory papules with small pustules at the apexIf it continues to develop, it will form red nodules or cysts of various sizes, fluctuate when squeezed, suppurate to form abscesses, and after ulceration, tissue fluid may exudate, and scarring may form in severe cases. There are generally white fat plugs, pus, and dirty blood that are cleaned up, and most of them are mixed. There is generally no odor.
2.Sebaceous cysts: often occur on the head, face, back and buttocks, etc. Generally, sebaceous cysts exist in the skin and are closely adhered to **. Sebaceous cysts are mostly single, occasionally multiple, round in shape, medium or elastic in hardness, no fluctuation, smooth surface, and clear borders. Generally, the volume is not large, the small ones are like rice grains, and the large ones can be like peanuts or eggs, and the growth is slow. The surface is often adherent to **, but the base can be moved, and the center of the sebaceous cyst** often has a depression the size of a black needle tip, which is the opening of the blocked sebaceous duct, and the white contents can overflow when pressed around, some are like white tofu residues, and the contents are white powdery sebaceous secretions and broken sebaceous gland cells, accompanied by a foul odor. In secondary bacterial infection, there may be local redness, swelling, fluctuating sensation, suppuration, and pain.
3.Boils: Commonly occurring on the head, face, neck, back and buttocks, often single, but also multiple, initially follicular inflammatory papules, gradually expanding into conical red induration, significant basal inflammation, local redness, swelling, heat, pain;If not carried out in time**, the boil will gradually expand, small yellow pus spots will appear on the surface, and the pain will be aggravated. After a few days, the induration** becomes soft, and a white necrotic pus plug appears at the apex, and in general, the pus drains after the pus head breaks down on its own, and the boil heals on its own.
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