What is a mili cyst?
A mili cyst is a small white bump that usually appears on the nose and cheeks. These cysts are usually found in groups. Multiple cysts are called milia.
Milia occur when keratin builds up under the skin’s surface. Keratin is a strong protein found mainly in skin tissue, hair and nail cells.
Milia can occur in people of all races and ages. However, they often occur in newborns.
Read on to learn more about milia, their causes, and what you can do to treat them.
What are the symptoms of milia?
Milia are small, dome-shaped bumps that are usually white or yellow in color. They usually do not itch or hurt. However, they can cause discomfort to some people. Rough fabrics or clothing can irritate the milia and make them look red.
Acne usually appears on the face, lips, eyelids, and cheeks. However, they are found in other parts of the body, such as the trunk and genitals.
They are often confused with a condition known as Epstein’s pearls. This condition refers to the formation of benign white-yellow cysts in the gums and mouth of infants. Milia is often mistakenly called “baby acne.” What does milia look like?
What causes milia?
The causes in newborns are different from those in older children and adults.
The cause of milia in newborns is unknown. It is often mistaken for baby acne caused by the mother’s hormones.
Unlike baby acne, milia do not cause inflammation or swelling. Babies with milia are usually born with the condition, while baby acne does not appear until two to four weeks after birth.
Older children and adults
In older children and adults, milia are associated with certain types of skin lesions. It includes:
Blisters due to skin conditions such as epidermolysis bullosa (GB), cicatricial pemphigoid, or porphyria cutaneous (PCT)
blistering injuries such as poisoning
long-term sun damage
long-term use of steroid creams
skin resurfacing procedures such as dermabrasion or laser resurfacing
Milia can also develop if the skin loses its natural exfoliating ability. This can happen as a result of aging.
What are the types of milia?
Milia types are classified according to the age at which the cysts appear. These types are divided into primary and secondary categories.
Primary milia are formed directly from dead keratin. These cysts are usually found on the face of infants and adults.
Secondary milia look similar but occur after an injury, burn, or blister that leads to the skin’s surface becomes blocked.
Milius of the newborn
Neonatal milia are considered primary milia. It develops in newborns and disappears within a few weeks. Acne usually occurs on the face, scalp, and upper body. According to Seattle Children’s Hospital, 40 percent of newborns develop milia.
Primary milia in older children and adults
Cysts appear around the eyelids, forehead, and genitals. Primary milia may disappear within a few weeks or persist for months.
Rare genetic disorders that affect the skin can lead to juvenile milia. It includes:
Nevoid basal cell carcinoma syndrome (NBCCS). NBCCS causes basal cell carcinoma (BCC).
Congenital pachyonychia. This condition causes thick or abnormally shaped nails.
Gardner’s syndrome. This rare genetic disorder can cause colon cancer over time.
Bazeux-Dupre-Krystol syndrome. This syndrome affects hair growth and sweating.
This condition is often associated with genetic or autoimmune skin disorders, such as discoid lupus erythematosus and lichen planus. Milia en plaque affects the eyelids, ears, cheeks, and chin.
Cysts can be several centimeters in diameter. It is mainly seen in middle-aged women, but can occur in adults and children of any age or gender.
Multiple eruption milieus
This type of milia consists of itchy patches that can appear on the face, hands, or trunk. Cysts usually appear over a period of time, from weeks to months.
These cysts form when the skin is damaged. Examples include severe burns and rashes. Cysts become irritated, red along the edges and white in the center.
Milia is associated with drugs and products
Using steroid creams can cause milia on the skin where the cream is applied. However, this side effect is rare.
Certain ingredients in skin care and makeup products can cause milia in some people. If you have milia-prone skin, avoid the following ingredients.
These are all mineral oils that cause milia. Lanolin also increases the formation of milia.