Occupational Acne & Chloracne
Occupational acne is an acneiform eruption caused by direct skin contact with chemical or physical agents at work, particularly in industrial settings. Its two most common and characteristic forms are oil acne, caused by industrial oils, and chloracne.
How occupational acne develops depends on the agent involved:
- Oil acne: results from regular contact with machine grease, mineral oils or metal-cutting fluids. Oil that builds up on the skin physically plugs the follicle openings, and together with acute or subacute inflammation this produces inflamed papules and pustules.
- Chloracne: develops after skin contact with, or absorption of, halogenated hydrocarbons (especially dioxins and polychlorinated biphenyls, PCBs). These halogenated toxins activate the aryl hydrocarbon receptor (AHR) in skin cells, severely disrupting keratinization at the follicle opening and altering the structure of the sebaceous glands, which leads to very dense crops of comedones.
At Haute-Derma, our approach to occupational acne and chloracne starts with a careful clinical assessment and a detailed history of the patient's work and chemical exposures. From there we build a personalized management plan to reduce exposure and restore the skin.
Clinical Features and Differential Diagnosis
Assessing occupational acne means looking closely at the type of lesions to tell it apart from ordinary acne (acne vulgaris) and from drug-induced eruptions:
- Presence of comedones: most acneiform eruptions have no comedones, but chloracne is marked by large numbers of closed comedones (whiteheads) and open comedones (blackheads) along with sebaceous cysts.
- Distribution: oil acne tends to cluster where the skin is in direct contact with oil or rubbed by oil-soaked clothing, such as the front of the thighs, forearms, chest and back. Chloracne, by contrast, typically affects the face (cheekbones and behind the ears), neck, armpits and groin.
- Lesion type: oil acne shows red papules and inflamed pustules at the follicle openings. Chloracne is persistent, combining countless comedones, inflamed nodules and distorted sebaceous cysts.
- Epidemiological and work factors: onset is directly linked to a workplace where the skin is exposed to machine grease, cutting oils or halogenated hydrocarbon chemicals.
Our Approach to Diagnosis and Treatment
- Detailed diagnosis and occupational history: the doctor examines the skin and determines whether the lesions are mainly pustules or comedones. A detailed history of the patient's job and exposure to machine oils or halogenated hydrocarbons is crucial for distinguishing the condition from ordinary acne.
- Controlling and removing the source of exposure: the first principle of treatment is helping the patient eliminate or minimize contact with the harmful agent. Haute-Derma advises on protective workwear, changing out of oil-soaked clothing, and cleansing the skin right after work to prevent follicles from becoming plugged.
- A targeted medical treatment plan: depending on the type and severity of the condition, treatment is tailored to clear blocked follicles and reduce inflammation. For persistent chloracne or pustules caused by industrial oils, the doctor will prescribe specific topical or oral treatments that regulate keratinization.
- Repairing and strengthening the skin barrier: patients are shown a medically sound skincare routine using gentle, soap-free cleansers and barrier-repair moisturizers. This removes clogging residue and calms the skin; patients should not scrub hard or squeeze inflamed lesions.
Common Types of Occupational Acne
| Type | Mechanism and Clinical Features |
|---|---|
| Chloracne | Caused by exposure to halogenated hydrocarbons (such as dioxins). Presents with dense crops of closed and open comedones plus sebaceous cysts on the face, behind the ears, on the neck and in the armpits. |
| Oil acne (industrial oils) | Occurs in workers in direct contact with machine grease or metal-cutting oils. The oil physically plugs follicle openings, causing inflamed papules and pustules on the thighs, forearms or wherever clothing is soaked with oil. |
| Eruptions from industrial chemical contact | Occur when the skin is exposed to industrial chemicals that provoke local inflammation or disrupt keratinization at the follicle opening. |
