dermatology for the general practitioners: common pediatric ... conference...dermatology for the...
TRANSCRIPT
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Dermatology for the General Practitioners:
Some Common Pediatric Dermatological Disorders
Kammi Yap Sayaseng, DNP, PNP-BC, IBCLC CANP Symposium
Sunday, March 22, 2015 Newport Beach, CA
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Goals
• Discuss some common pediatric dermatological problems; atopic dermatitis, eczema herpaticum, molluscum contagiosum, and cutaneous warts.
• Up-to-date and evidenced-based treatment recommendations
for each condition discussed
• Patient education
• When to refer patients to dermatology
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Learner Outcomes
• Recognize common pediatric dermatological disorders discussed in this presentation.
• Able to recommend and or treat common conditions
discussed. • Recognize when to refer patients to dermatology.
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Skin Structure
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Skin Structure
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Atopic Dermatitis (AD) Prevalence
• 5 to 20% of children worldwide • ~11 -17% in the States • Onset before age 5 years
• Slightly more in female than males
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Atopic Dermatitis or Eczema
• “Dermatitis” and “eczema” used interchangeably • A genetic defect in the proteins supporting epidermal barrier • A chronic inflammatory skin condition • Eczema, asthma, and allergic rhinitis (triad of atopies)
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Pathogenesis of Atopic Dermatitis
• Impaired epidermal barrier function • An immune function disorder
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Impaired epidermal barrier function
• Intrinsic structural and functional abnormalities • Disease evolves from the outside in • Primary defect, an abnormal epidermal barrier
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Epidermis
• First line of defense between the body and the environment • With intact epidermis, environmental irritants, allergens, and
microbes cannot enter the body
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Goals of AD treatment:
• Reduce symptoms of pruritus and dermatitis • Prevent exacerbations • Minimize therapeutic risks
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Atopic Dermatitis Treatments • Prevention is the best treatment • Mild soaps, moisturizers, or emollients • Topical corticosteroids -Use lower strength in thin skin areas (face, armpits, genital areas) -No more than 2 wks of continuously use • Antihistamine to help control pruritus and aid in sleep
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Atopic Dermatitis Treatments, cont’d.
• Antibiotics for superinfection or secondary infection • Phototherapy (ultraviolet light; adolescents and adults) • Systemic immunosuppressive agents (use limited by
potential side effects)
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Moisturizers and Emollients
• Used interchangeably • Emollients, “to soften”; reduces water loss from the
epidermis • Moisturizer, “to add moisture” • Both have two actions: 1. Occlusive---provides layer of oil on surface of skin to slow water loss → ↑moisture to stratum corneum 2. Humectants---substances introduced into the stratum corneum to increase water holding capacity
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Causes of Hypersensitivity Reactions to Treatment (hindering AD improvement) • Topical emollients -lanolin -propylene glycol -ethylenediamine -formaldehyde • Topical immunosuppressive medicines -corticosteroids -calcineurin inhibitors (protein phosphatase, activates T-cell system)
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Food and Environmental Triggers
• Certain environmental factors and foods are controversial -reduction of house dust mite antigens -milk and egg exclusion, not shown to be beneficial (systemic review of 9 randomized trials) (Weston & Howe 2015)
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Lotion, cream, and ointments
• Lotion -high water and low oil content -may contain ethyl alcohol • Cream (comes in a jar) -lower water content • Ointments -no water content -better protect against xerosis -down side, too greasy
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Atopic Dermatitis: Patient and Family Education
• Prevention is the best treatment • Avoid triggers (environmental): -excessive bathing without using moisturizers -low humidity environments -emotional stress -xerosis (dry skin) -overheating of skin -exposure to solvents and detergents (esp. scented ones)
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Atopic Dermatitis: Patient and Family Education
• Compliance and adherence to treatment regimen and basic skin care very important
• Short cool or lukewarm baths • Mild unscented soaps • Pat dry the skin after bathing • Apply unscented moisturizer or emollients immediately
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Atopic Dermatitis: Patient and Family Education
• If prescribed topical medicines, apply first then apply
moisturizers • Apply moisturizers at least twice a day • Cotton clothing • Wet PJ wrap
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When to refer atopic dermatitis patients
• Patients with refractory AD • Conventional therapies do not provide sufficient
improvement
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Eczema Herpaticum (EH) • Disseminated herpes simplex virus (HSV); HSV-1 or HSV-
2 exposure • Highest incidence in younger children • Association of AD and ↑ risk of EH poorly understood • Multiple host factors play a role Leung (2013); Khan, Shaw, & Bernatoniene (2014)
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Eczema Herpaticum (EH), cont’d.
• Pt may not have active or severe eczema to get EH • Abnormal skin barrier function predisposes pt to EH • Pts with more severe AD, hx/o food allergy or asthma, early
onset of AD, hx/o cutaneous staph or molluscum contagiosum infections are prone to EH
Leung (2013); Khan, Shaw, & Bernatoniene (2014)
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Diagnosing EH
• If a child’s infected AD fails to respond to abx and topical corticosteroids
• Rapidly worsening, painful eczema • Viral culture, gold standard
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EH: Clinical Presentations • Widespread vesicles in pts with pre-existing skin dz (AD);
may be difficult to distinguish from secondary bacterial infection (resembles chickenpox)
• Many similar shape and size of eroded lesion (secondary to scratching)
• Viremia • Fever • Malaise • LAD
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EH Complications
• Systemic complications keratoconjunctivitis (cornea and conjunctiva inflammation) → blindness, multi organ involvement → meningitis and encephalitis → death • Mortality rates for untreated EH: 6-10% Khan, Shaw, & Bernatoniene (2014).
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EH Transmission
• Direct contact with infected secretions
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EH Treatment
• Often needs hospital admission • PO or IV acyclovir • Hydration • Abx for secondary bacterial infection • Strict skin care; emollients • Needs ophthalmology referral
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Use of topical corticosteroids and eczema herpaticum • Previously, use of topical corticosteroids concerns: -may promote dissemination of HSV -worsen the disease itself • Multicenter retrospective cohort study, n = 1331, 2 months -
17 yrs with admitting dx of eczema herpaticum • Not associated with worsening of disease • Systemic therapy → to ↑ LOS Aronson, Shah, Mohamad, & Yan (2013).
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Molluscum Contagiosum
• A member of a poxvirus family • More exclusive disease of children than warts • Chronic, localized infection • Flesh-colored, domed shaped papules (anywhere on body
except palms and soles)
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Molluscum Contagiosum, cont’d.
• Humans, the only known host • Common disease of childhood • May appear anywhere on body, except palms and soles • Common areas of involvement: trunk, axillae, antecubital and popliteal fossae, and crural (groin) folds
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Molluscum Contagiosum, cont’d.
• In adolescents and adults: -STI, contact sports, immunosuppressed • In STI: -groins, genitals, proximal thighs, and lower abd • In HIV or other immunocompromised pts: -lesions can be large (giant molluscum) -widespread • May or may not be pruritic
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Molluscum Contagiosum Transmission and Risk Factors • Skin-to-skin contact • Auto-inoculation • Bath sponges and towels • Risk factors: having AD swimming in public pools
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Molluscum Contagiosum: Diagnosis and Treatment
• By clinical characteristic appearance of lesions • Cryotherapy with liquid nitrogen (repeat q2-4 wks) • Curettage (bleeding and risk of scarring)
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Molluscum Contagiosum: Diagnosis and Treatment, cont’d. • Cantharidin (topical blistering agent; avoid using on face,
genital, perianal areas) high rates of parental satisfaction • Topical retinoids (Tretinoin; qod to bid) • Imiquimod (not effective); KOH (needs more data)
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Molluscum Contagiosum: Patient and family education • Most cases self-resolve within 6-9 months • Rare cases persist 3-5years • Cover lesions likely to come in contact with others with
clothing or watertight bandage • Keep fingernails trimmed short • Avoid scratching • No sharing of bath towels
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Cutaneous Warts (Verrucae) or Common Warts • Common in children and young adults • Human papillomaviruses (HPV) • Skin-to-skin (direct or indirect) contact spread • Self-inoculation (scratching) • Maceration or sites of trauma predispose patients to
inoculation • Spontaneous remission within two years in two-thirds of
patients
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Cutaneous Warts, cont’d.
• Many different types of warts • Mostly seen on fingers, periungual, and back of hands • Site of entry, open skin or wound; e.g. nail biters or picking at
hangnails • May have black to red dots, “seeds”, and globules
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Diagnosis
• By clinical appearance and location • Dermatoglyphics (obscure normal skin markings)
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Choice of Therapy
• Often goes away without tx (but can last for a long time) • Type of tx dependent on patient’s age and location of lesion • Cryotherapy with liquid nitrogen (different modes of
administration) • Cantharidin
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Other options for wart treatment
• Chemical peels (Salicylic acid, tretinoin, and glycolic acid) • Electrosurgery (burning) and curettage (scraping) • Excision • Laser tx
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Wart home treatment
• Soak the warts first, may pare down (using nail filers or pumice stone) the wart first then apply med
• Salicylic acid (OTC, different forms) • Duct tape---conflicting evidence about efficacy
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Warts: Pt Education
• Avoid scratching at the lesions • Keep fingernails trimmed short • No sharing of bath towels or shaving equipment • Nail filer or pumice stone used to pare warts should not be
used on normal nail or skin • Wear flip-flops at public pools, showers, and locker rooms • Do not touch someone else’s warts • Keep warts dry; moisture enhances spread
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When to refer pt with warts to a dermatologist
• Warts that hurt, itch, burn, or bleed • Warts are growing rapidly • Multiple warts • Warts on face or genitals • Immunosuppressive • Suspicion that lesion is not wart
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Thank all you for coming!
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References • Aronson, P.L., Shah, S.S., Mohamad, Z., & Yan, A. (2013). Topical steroids and
hospital length of stay in children with eczema herpaticum. Pediatric Dermatology, 30, 215-221. doi: 10.1111/j.1525-1470.2012.01859.x
• Fukaya, M., Sato, K., Sato, M., Kimata, H., Fujisawa, S., Dozono, H., et al. (2014). Topical steroid addiction in atopic dermatitis. Drug, Healthcare and Patient Safety, 6, 131-138. doi: 10.2147/DHPS.S6920
• Goldstein, B.G. & Goldstein, A.O. (2014). Cutaneous warts. uptodate.com • Isaacs, S.N. (2015). Molluscum contagiosum. uptodate.com • Khan, A. Shaw, L., & Bernatoniene, J. (2014). Fifteen-minute consultation:
Eczema herpaticum in a child. Archives of Disease in Childhood, education and practice edition. doi: 10.1136/archdischild-2013-304460.
• Leung, D.Y.M. (2013). Why is eczema herpaticum unexpectedly rare? Antiviral Research. 98(2), pg. 153-157. doi: 10.1016/j.antiviral.2013.02.010
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References • Lio, P. (2007). Warts, molluscum and things that go bump on the skin: a
practical guide. Archives of Disease in Childhood, education and practice edition. doi: 10.1136/adc.2007.122317
• Moye, V., Cathcart, S., Burkhart, C.N., & Morrell, D.S. (2013). Beetle juice: A guide for the use of Cantharidin in the treatment of molluscum contagiosum. Dermatologic Therapy, 26, 445-451. doi: 10.111/dth.12105
• Mathias, R.A., Weinberg, A., Boguniewicz, M., Zaccaro, D.J., Armstrong, B., Schneider, L.C., Hata, T.R., Hanifin, J.M., Beck, L.A., Barnes, K.C., and Leung, D.Y.M. (2013). Atopic dermatitis complicated b y eczema herpaticum is associated with HLA B7 and reduced interferon-ƴ-producing CD8+ T cells. British Journal of Dermatology, 169, 700-703. doi: 10.111/bjd.12382
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References
• Spergel, J.M. (2015). Management of severe refractory atopic dermatitis (eczema). uptodate.com
• Weston, W. L. & Howe, W. (2015). Treatment of atopic dermatitis (eczema). uptodate.com
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References, cont’d.
• American Academy of Dermatology. Warts: Who gets and causes? Retrieved from https://www.aad.org/dermatology-a-to-z/diseases-and-treatments/u---w/warts/who-gets-causes • American Academy of Dermatology. Warts: Diagnosis, treatment, and outcome.
Retrieved from https://www.aad.org/dermatology-a-to-z/diseases-and-treatments/u---w/warts/diganosis-treatment
• American Academy of Dermatology. Warts: Signs and symptoms. Retrieved from https://www.aad.org/dermatology-a-to-z/diseases-and-treatments/u---w/warts/signs-symptoms
• Dermnet.nz. Emollients and moisturizers. Retrieved from http://dermnetnz.org/treatments/emollients.html