The covid-19 pandemic has led to a marked increase in the use of personal protective equipment (PPE) both in and out of healthcare settings. The term maskne has become increasingly popular during the pandemic, particularly in the media, where it is used to describe several facial dermatoses. Individuals often buy expensive but potentially ineffective treatments for these conditions.
In this practice pointer we summarise the most common causes of facial eruptions associated with wearing facial PPE, and highlight the key areas to cover when assessing someone with new or worsening pre-existing facial dermatoses that they attribute to the use of facial PPE.
Facial PPE in this article includes full face shields, visors, safety spectacles, surgical masks (fluid resistant surgical mask, FRSM type IIR), and respirator masks (eg, FFP3, FFP2, and N95).1
Facial dermatoses related to PPE have been well described, but data about their prevalence are limited, and often a descriptive terminology is used rather than specific diagnoses. Based on the limited available evidence, mask related acne and irritant contact dermatitis are the most common facial dermatoses associated with mask wearing.2345
During the covid-19 pandemic, a prospective cross sectional study of 833 medical school staff in Thailand, including healthcare and non-healthcare workers, showed a self-reported prevalence of 54% adverse skin reactions to surgical and cloth masks.6
Typically, a patient presents with new onset facial eruption, or exacerbation of a pre-existing dermatosis that is most pronounced in the area covered by the mask. Ideally, such an assessment would take place in person, but video consultation provides an acceptable alternative.
Relevant history and family history of skin disease and a comprehensive drug history that includes prescribed, over-the-counter, and complementary medicines
Temporal relationship with mask wearingestablish if periods without mask wearing alleviate or improve the problem, eg, allergic contact dermatitis should improve with a period of no mask wearing, while acne, once established, may not respond so readily
Symptoms of itch, soreness, and appearance of pustules or papules
Duration of PPE exposure each day
Ask if mask breaks (periods of time when facial PPE is removed entirely) are allowed or taken
Assess the impact on the patients mood, work, and social life to assess severity and decide further management. The effect of PPE related dermatoses on the life quality of healthcare workers can be substantial3
Examination should focus on the morphology of the eruption, the distribution, and whether it is present at sites other than the face.
Each condition described below may appear de novo or be exacerbated by wearing facial PPE. Exacerbation tends to result from the development of a warm, moist, occlusive environment around the face, particularly during mask use. Added to this is the frictional effect of the material held in place with elastic.
General measures to prevent PPE related facial dermatoses are outlined in the box and are advised in the treatment of all conditions listed below. Additional standard medical treatment for each dermatosis is discussed separately. When post-inflammatory hyperpigmentation or scarring occurs, a more aggressive treatment approach is required to prevent irreversible skin changes. Referral to specialist care is warranted at this stage if no improvement occurs.
Irritant contact dermatitis (ICD) is the most common occupational and mask related dermatosis.3 ICD is a form of exogenous eczema caused by direct physical or chemical injury. Pressure ICD related to facial masks is commonly described4 over the cheeks and nasal bridge.35 It is associated with prolonged mask wearing (>6 hours) and its severity depends on the irritant and chronicity of exposure.3 Presentation ranges from a discrete, dry, scaly patch to oedema and vesicles, erosions, and ulceration.35 People with atopic dermatitis, who already have a defective skin barrier, are particularly at risk of developing ICD.7
Enabling restoration of the skin barrier is key to treating ICD, and regular mask breaks (every hour for respirators) is one way to do this.8 For broken skin, a silicon backed dressing such as Mepilex Border Lite can be applied to protect the skin and ensures that the mask seal remains intact.9
Allergic contact dermatitis (ACD) (fig 1) is a delayed type IV hypersensitivity reaction to an external allergen, and is much less common than ICD.910 Typically, it occurs after exposure to preservatives such as formaldehyde11 and dibromodicyanobutane,12 but thiuram, a rubber accelerator found in the elastic straps on surgical masks,13 is also a recognised allergen. Metal wires are used to mould the mask to the face; nickel and cobalt have both been reported as causes of facial ACD.14
Allergic contact dermatitis
ICD and ACD can be clinically indistinguishable. Both usually manifest as localised dermatitis but well demarcated areas of inflammation and redness are more suggestive of ACD, while a more diffuse pattern is more commonly seen in ICD. Treatment involves a short course of a mild to moderate potency corticosteroid, such as hydrocortisone 1% ointment. Avoiding allergens prevents further episodes, and therefore identification of causative agents is key. This can be achieved by patch testing, indicated where well demarcated areas are seen clinically and in cases of severe disease.
Atopic eczema is a very common dermatitis that affects up to 20-30% of children and 2-10% of adults.15
Wearing a mask may have an irritant effect on the more delicate facial skin of a patient with eczema, plus the occlusive, moist environment favoured by mask wearing may have a deleterious effect on the skin, favouring the worsening of eczema.
This dermatosis (fig 2) affects approximately 1-3% of the adult population and usually starts in young adult life.16 On examination, a dermatitis with greasy yellow scale predominantly affecting the scalp, eyebrows, glabellar, and nasolabial folds is common. Management involves regular antifungals such as ketoconazole 2% shampoo and/or short courses of mild topical corticosteroids such as hydrocortisone 1% ointment.17 As with atopic eczema, the warm, moist, occlusive environment created by mask wearing may predispose to development of seborrhoeic dermatitis.
Periorificial dermatitis consists of a patchy erythema with tiny papulopustules, affecting the periocular and perioral skin of young women (with sparing of the vermilion border). It can be idiopathic, or is caused by the use of cosmetics or topical corticosteroids directly or indirectly (via fingers that are applying the agent elsewhere). Mask wearing may predispose to the development of periorificial dermatitis for reasons similar to those listed for atopic and seborrhoeic dermatitis. Management involves stopping the implicated cream and simplifying the skin care regimen. Topical antibiotics such as erythromycin will suffice for milder cases but often a four week course of a tetracycline, such as lymecycline 408 mg once daily, is needed.18
Both pressure and contact urticaria (fig 3) are uncommon complications of PPE.1119 Pressure urticaria is caused by the downward pressure of the mask and is characterised by the formation of wheals, immediately or delayed (4-6 hours), after a pressure stimulus. A well fitted mask that is not over tight is recommended, or alternatively a change in PPE.19
Contact urticaria is an immediate reaction to an offending allergen such as latex or formaldehyde. It typically resolves within 24 hours of removal of the contact trigger. Regular non-sedating H1 antihistamines such as loratadine are the mainstay of treatment for inducible urticaria.20
Acne vulgaris (fig 4) is a chronic inflammatory disease of the pilosebaceous unit. PPE related acne, which may be considered a subtype of acne mechanica, occurs in people with a previous history of acne vulgaris as well as in those previously unaffected. It has been associated with surgical masks and N95 respirators.2321
The pathogenesis of PPE related acne is thought to be threefold:
Creation of a humid microclimate inside the mask
Mucosa can be colonised by bacteria which could increase bacterial load on the surrounding skin
Friction effect of a close fitting mask can damage the follicular ostia causing chronic irritation, and this effect is worsened by heat and humidity.22
Retinoids such as adapalene cream alone or in combination with benzoyl peroxide cream once daily can be used for mild cases, with the addition of an oral tetracycline such as lymecycline 408 mg once daily for up to 12 weeks for moderate to severe cases.23
Rosacea (fig 5) typically affects adults aged 30-50 with fair skin.18 Commonly, patients present with facial erythema and telangiectasias of the convexities (chin, cheeks, nose, forehead). The classic area of distribution of rosacea overlaps with that covered by a mask when worn correctly. The chronicity and presence of telangiectasias usually help to distinguish rosacea from peri-orifical dermatitis. Rosacea can be induced or worsened by prolonged periods of mask wearing. Medical treatment includes topical agents such as ivermectin 1% cream once daily for mild cases. An oral tetracycline such as moderate release doxycycline 40 mg once daily for 8-12 weeks can be added for moderate to severe cases.24
Folliculitis (fig 6) on the face is more common in men because of its association with facial hair. Occlusive folliculitis, bacterial folliculitis, and pseudofolliculitis barbae (caused by ingrowing hairs) have clinically similar presentations with papules, pustules, and more rarely nodules. A swab can exclude bacterial infection. Gentle daily cleansing with a soap-free cleanser, gentle exfoliation (to release ingrown hairs), and replacing dry shaving with wet shaving can all be helpful. Antibiotic treatment is indicated where bacteria are isolated; in purely inflammatory (sterile) cases, a combination steroid/antimicrobial cream can be used.25
Cleanse skin26 with a gentle soap-free cleanser
Apply a light emollient at least 30 minutes before applying facial PPE26
Apply a silicon based barrier tapeeg, siltape (Advancis)to nasal bridge and cheeks49
Wipe skin under PPE with a silicon based barrier wipe to provide a film, protecting the skin from the harmful microenvironment26
Take time to fit the mask and ensure it is not over tight26
Take regular breaks from the mask (every one hour for respirators) to relieve the pressure and prevent moisture build up26
Stay well hydrated26
Maintain oral hygiene (teeth brushing twice daily and daily interdental flossing/brushing)27
Consider referral to secondary care in cases of severe, debilitating disease, or if the condition fails to respond to the treatments described above. Also consider a routine referral if specialist investigations, such as skin prick testing and patch testing in cases of suspected contact allergy, are indicated.
Consider how a facial dermatosis affects the patients quality of life, work, and relationships
Reflect on whether you incorporate considerations of different Fitzpatrick skin types in your treatment decisions, given the higher risk of post-inflammatory dyspigmentation and/or scarring in darker skin types
Consider the occupational implications of the diagnosis and treatment for the patient, and discuss these as part of the consultation
Signpost patients to the British Association of Dermatologists website as a useful repository of good quality reliable patient information leaflets on skin conditions (https://www.bad.org.uk)
This article was reviewed by two healthcare workers who had experienced PPE related facial dermatoses and whose experience of receiving care informed the content of this article. Specifically, they advised on the content of the box General measures to prevent PPE related facial dermatoses.
We obtained evidence using a systematic search of Medline, Embase, and Pubmed. Searches were confined to those publications written in the English language. Search terms used were facial dermatoses and mask, facial dermatoses and PPE, acne and PPE, acne and mask, eczema and mask, allergic contact dermatitis and mask, FFP3 mask and skin, N95 mask and skin.
Read the original post:
Mask related acne (maskne) and other facial dermatoses - The BMJ
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