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Acne Triggers: Occlusive Cosmetics
Acne vulgaris is a common, chronic skin disease affecting almost everyone at least once in their lifetime.
During puberty, androgen hormone production increases [link widoczny dla zalogowanych], which induces an increase in the production of sebum and the development of greasy skin. This stimulates a cascade of events that cause acne formation.
In most people, acne appears during adolescence [link widoczny dla zalogowanych], though it could appear de novo at any age. In 2000, Layton AM, in an article in the Medicine titled "Acne vulgaris and similar eruptions," noted that approximately 5% of women and 1% of men 25–40 years of age either continue to get acne lesions or develop acne (late-onset acne) after adolescence.
Acne is most prevalent among adolescents and young adults, affecting approximately 85% of people at some point between 11–30 years of age. Peak incidence is seen in females 14–17 years of age and males 16–19 years of age.
Acne Triggers: Medications
Acne Trigger: Aggressive Washing
Acne Triggers: Topical and Systemic Steroids
A hereditary predisposition for acne formation has been noted by most studies. It is well known that tendency towards pimples and acne scar formations runs in families. This could be due to the inborn sensitivity of the sebaceous glands to hormonal actions during puberty.
Steroids, particularly the medium and potent strength topical halogenated steroids, can induce eruption of steroid acne, where sudden appearance of skin colored and pus-filled bumps worsen the acne after an initial period of improvement for a few days. The initial period of improvement with steroids is because of their anti-inflammatory actions.
Acne is not caused by poor hygiene and aggressive and frequent washing with abrasive soaps can worsen the acne situation in most sufferers.
Acne Triggers: Diet
Prolonged periods of oral steroids can trigger pimples on the face and body in a majority of patients.
In females, hormonal imbalance due to ovarian diseases (for example, in polycystic ovarian disease) induces acne eruptions. There is a flare up of acne immediately before the menstrual periods in some women. Pregnancy, in some, clears acne, while in others, there is a worsening of acne during the expectant months.
Acne Triggering Factors: Age and Hormones
In individuals with acne prone skin, use of oil based greasy foundations and face creams may stimulate new acne eruptions by causing build up of sebum within by blocking the hair follicle pores. This is known as acne cosmetica. Such individuals are advised to use only water based, oil free cosmetics as make up.
Acne Trigger: Heredity
Food as a cause of acne is still a controversial topic among dermatologists, despite patients' anecdotal reports and a few studies which blame Westernized dietary habits, milk and milk products, and food items containing high levels of iodine and, possibly hormones. More studies and resea
It will be interesting to analyze what triggers acne and whether lifestyle is also a deciding factor, in addition to the hereditary and hormonal causes.
Many systemic drugs and topical applications may induce fresh acne eruptions [link widoczny dla zalogowanych], known as acne medicamentosa. In addition to the steroids, drugs like phenytoin, lithium, iodides and the anti-tuberculous medication INH are known to trigger acne. Topical agents like chlorinated hydrocarbons, coal tar derivatives, cutting oils and grease cause acne-like eruptions even on body areas where normal zits usually do not appear.