Pediatric Dermatology~ A Primary Care Approach · Tinea Incognito Tinea corporis whose appearance...
Transcript of Pediatric Dermatology~ A Primary Care Approach · Tinea Incognito Tinea corporis whose appearance...
Topics
Rashes Viruses Acne
Eczema
Chronic contact dermatitis
7,450,560
Atopic
dermatitis
2,912,597*
Chronic
contact
unspecified
dermatitis
6,441,403*
Chronic
allergic
dermatitis
487,000*
Chronic
irritant
dermatitis
27,000*
Acute
allergic
dermatitis
1,790,000*
*Source: PDDA, patients diagnosed and treated.
Eczema: A Prevalent Condition
Irritant Dermatitis
Phyto-photo
Dermatitis
Contact Dermatitis
Margarita Dermatitis
Allergic Contact
Dermatitis
Hand Dermatitis
•Contact/irritant
•Allergen
Allergic Contact Dermatitis25 chemicals responsible for half of all cases
• Poison Ivy (Toxicodendron
radicans)
• Nickel
• Rubber gloves
• Hair Dye and temporary tattoos
• (p-Phenylenediamine)
• Textiles
• Preservatives
• Fragrances
• Corticosteroids
• Neomycin
• Benzocaine
American Contact Dermatitis Allergen of the
Year
Bacitracin
2003
Cocamidopropylbetaine
2004
Corticosteroids
2005
Paraphenylenediamine
2006
Fragrance
2007
Nickel
2008
Mixed Dialkylthiourea
2009
Neomycin
2010
Dimethyl fumarate
2011
Acrylate
2012
Methylisothiazolinone
2013
Benzophenones
2014
Formaldehyde
2015
Cobalt
2016
2018 Allergen of the
Year
• Skin Products/cosmetics
• Coated pills
• Topical corticosteroids
• Food coloring/vanilla extract/bread
• Topical acne meds
• Brake fluid
• Nontoxic antifreeze
Propylene glycol
Atopic Dermatitis
‘Eczema’ Treatment
Avoid irritants/allergens/causative agents
Moisturize – to restore barrier
Topical steroids?
Oral steroids?
Moisturize!
1
CeraVe
2
Cetaphil
3
New Products•Cetaphil Pro Gentle
•Aveeno Eczema Balm
•Eucerin Eczema Relief
•CeraVe Therapeutic Hand Cream
First line therapy
Topical corticosteroids
• Potency
• Site
• Frequency of application
• Duration of therapy
• Risk vs benefit
• Age of patient
• Vehicle
Things to consider:
TOPICAL STEROIDS
The Chosen
Ones:
Topical
Steroids
• Desoximetasone cream/ointment (Topicort)
• Class 3/2
• Clocortolone pivalate cream (Cloderm)
• Class 5
Class C
• Fluocinolone topical (Derma- Smoothescalp and body oil)
• Desonide (Desonate)
• Both Class 6
Class B
Special Circumstances
www.expertcosultbook.com
PO steroids(based on weight/age)
• 1-2 mg/kg PO div BID X 5 days
Prelone 15/5
• 20 mg QD – BID X 5 days
Prednisone
Antibiotics
• 25-50 mg/kg/day div Q 12 hours X 7-10 days
Cephalexin 125/5; 250/5
• 8-10 mg/kg/day div Q 12 hours X 7-10 days
Septra DS
• 1 tablet bid X 10 days• (8 years and older)
Doxycycline 100 mg
Sometimes – treating the ‘itch’ helps….
Cetirizine (Zyrtec) SyrupFexofenadine (Allegra)
Liquid/MeltableTablets/Tablets
Loratadine (Claritin) Syrup/Chewables/
Reditabs
But only for contact/allergic/irritant
AAD recommendations for AD
• Non sedating antihistamines have shown no benefit
• Sedating are beneficial, but only as adjuncts to topical therapy/an aid for insomnia due to pruritus
• Hydroxyzine
• Diphenhydramine
• Chlorpheniramine
Treatment Rule:
2 week treatment regimens
If not better – re-evaluate!
Diagnosis
• Anyone itching should be suspect
• Scabies: Scrape with mineral oil and #15 blade
• Finger webs, wrists, axillae, nipples, penis, ankles
• Lice: Look behind the ears; hair line
• Treat entire area and counsel patient ad nauseum
• Treat ENTIRE household / ALL contacts
Scabies
• Permethrin (Elimite)
• PO Ivermectin .2mg/kg PO X1 –
can repeat in 2 wks
• 15 kg (33 lbs)
Lice
• New Products
• Spinosad (Natroba): >4 yrs – wash
off in 10 mins; repeat in one week
• Ivermectin topical (Sklice): > 6
months – wash off in 10 mins
Treatment
Cetaphil
Gentle
Cleanser?(no age restrictions)
Use 8 ounce bottleUse
Apply to dry hair; massage into scalpApply
Comb out excessComb
Dry with hairdryer – completelyDry
Leave in overnight/8 hoursOvernight
Shampoo out in morningShampoo
Repeat in 7 days if neededRepeat
www.medicinenet.com
Tinea
Tinea
• Dermatophyte infection
• Trychophyton
• Person to person contact
• Scaly
• Expanding
• Alopecia with tinea capitus
www.medicinenet.com
Treatment
• Ketoconazole 2% shampoo - daily
• Topical Ciclopirox – BID till clear plus 1 week
• Capitus - Griseofulvin 20-25 mg/kg/day for 6-8
weeks
• AVOID Lotrisone
Lotrisone
John Bielinski “It covers everything!”
Betamethasone .05% crm
• Steroid
• Class 1 and 2
Clotrimazole 1% crm
• “Ok” antifungal
• Better on Candida
Tinea
Incognito
Tinea corporis whose appearance has been modified by the application of high-potency topical steroids in a way that renders it no longer visually diagnostic.
Tinea incognito usually presents as nonspecific inflammatory papules and pustules without the characteristic features of tinea. In some cases, however, tinea incognito may retain the scaly appearance of tinea but be modified by local steroids so that it becomes extensive and bizarrely shaped.
The condition was first described and so named in 1968 by FA Ive and R Marks (in the British Medical Journal vol. 3, pages 149-52). It is, literally, tinea in disguise, tinea veiled by treatment.
• BMJ. 1993 September 11; 307(6905): 645–647.
• PMCID: PMC1679014
•
E G Evans, B Dodman, D M Williamson, G J Brown, and R G
Bowen
Department of Microbiology, University of Leeds and General
Infirmary.
Comparison of terbinafine
and clotrimazole in treating tinea pedis.
Conclusion
These results indicate that a one week course of terbinafine 1% cream
(Lamisil) is more effective in the treatment of tinea pedis than a four
week course of clotrimazole 1% cream (Lotrimin), both in terms of
mycological cure and effective treatment.
Quality of Dermatologic Care
Delivered by Physician Assistants:
An Analysis of Prescribing Behavior
for the Combination Antifungal Agent
Clotrimazole-Betamethasone
ARCH DERMATOL/VOL 143 (NO. 12), DEC 2007
Anita Satyaprakash, BS Rajesh Balkrishnan, PhD Fabian T. Camacho, MS
Sujata S. Jayawant, MS Alan B. Fleischer Jr, MD Steven R. Feldman, MD, PhD
Tinea Versicolor
Tinea Versicolor
Hypo or Hyper pigmented patches
and macules on chest, back, neck,
abdomen…..
Malassezia furfur
Treatment
Ketoconazole 2% shampoo as a body wash
• AND
Topical Ciclopirox gel/cream BID till clear plus 1 week
Can consider Diflucan…but with caution
• 7% of candida isolates are resistant
• 46,000 infections yearly
• 3400 resistant infections
• 220 deaths• http://www.cdc.gov/drugresistance/threat-report-2013/
Fluconazole – CDC Threat Report
Diflucan 150/200 mg(adolescents and older)
Take two tablets; wait one hour
Work out to the point of sweating
Repeat in one week
Viruses
Molluscum Contagiosum
What do we know about viruses?
Contagious
Require an immune response for resolution to
occur
www.webmd.com
Pox Virus
Dome
shaped
Umbilicated
Treatment??
American Academy of Pediatrics
• Retinoids – Tazarotene gel
• LN2
• EMLA and curettage
• Aldara (Imiquimod)
• Cantharidin (beetle juice)
Goal: stimulate immune response
“BOTE” sign
Warts
Warts
Human Papilloma Virus
• At least 100 different strains
• Probably more
Treatment
• Cryosurgery
• Laser
• Vit C/Zinc
• Topicals
• Antigen injections
Herpes Labialis
Grouped vesicles on an
erythematous base
HSV
• 90% of individuals worldwide have either HSV 1 or 2 or both
• US: approx 50% under 50 years of age have HSV 1 – cold sores
• 1 in 6 under 50 years of age have HSV 2 (approx. 16%) - genital
HSV – 8 different types
• HSV 1
• Cold sores
• HSV 2
• Genital herpes
• HSV 3
• Varicella-zoster
• HSV 4
• Epstein Barr
• Mono
• HSV 5
• Cytomegalovirus
• Mono
• HSV 6
• Roseola
• HSV 7
• Roseola
• HSV 8
• Kaposi Sarcoma
Aphthous
Ulcers
HSV 6
Recurrent and Persistent Pityriasis Rosea
HSV 6 & 7
HSV and….
• Erythema multiforme minor – recurrent
• Most commonly HSV 1
• Proceeds skin eruption by 3-14 days
• Mycoplasma pneumonia is the next most common trigger
Target lesion
Purpuric macule or urticarial plaque
Maximum of 2cm
HSV Labialis Treatment
• Resistance is developing to Acyclovir….
• Especially among HIV and transplant patients
• 2-11 years: 75mg/kg/day divided 5X daily 5-7 days
• 12 years: 1000mg/day divided 5X daily 5-7 days
• Valacyclovir 2000 mg q12hr X 1 day at onset
• 12 years and older
• Famcyclovir 1500 mg X1 at onset
• 12 years and older
• Sitavig 50mg buccal tab
• 18 years and older
• Apply within 1 hr of onset
• 6 hr application
Acne
www.acneonlineinfo.net
Components…
Hormones
Sticky oil
Dead skin
Bacteria
• normal skin flora
Inflammation
Treatment…
Retinoids – KEY TO THERAPY
• we’ll talk about this
PO antibiotics
BPO cleansers/combinations
BCP
Isotretinoin
Retinoids and
analogues
Act on retinoid receptors
Tretinoin, Adapalene, Tazarotene
Important for inflammatory and non-inflammatory acne
Nightly application ~ photoinactivation
Benzoyl peroxide inactivated by tretinoin
Tretinoin
• Tretinoin .025%/.05%/.1%
• RetinA Micro
.04%/.08%/.1%
• Atralin .05% gel
• Ziana/Veltin ( tretinoin .025%
gel/clindamycin gel 1.2%)
Adapalene
• Adapalene .1% cream/gel/lotion
• Differin .3% gel (adapalene .3%)
• Epiduo (adapalene .1% gel/benzoyl peroxide
2.5%)
• Epiduo Forte (adapalene .3% gel/benzoyl
peroxide 2.5%)
Tazarotene
• Tazorac .05% cream/gel
• Tazorac .1% cream/gel
• Fabior .1% foam
• Maybe…soon a wash/combo?
New Study
• 40% of acne patients have scars
• Can occur with any level of acne
• Topical Adapalene and Tazarotene
• Increase dermal collagen
• As effective as micro-needling for prevention and treatment of scars
PO
Antibiotics
Doxycycline 100 mg QD WITH FOOD
• Pseudotumor cerebri
TMP-SMX DS 1 PO BID X 1 month then QD X 1 month
• Stevens Johnson Syndrome/TEN
Doxycycline 40 mg (Oracea) 1 PO QD
• Currently: not FDA approved for acne
New PO acne antibiotics
Tetracycline: Seysara
Minocycline: Ximino; Minolira
BPO
Cleansers
Neutrogenia Clear Pore
Acne Free
Oxy 5Proactive
BenzeFoam Ultra (BenzePro)
Topical
AntibioticsErythromycin Clindamycin
Since 1997…
Topical Antibiotic combos
• Clindamycin/BPO
combinations
• Duac
• Benzeclin
• Acanya
• Onexton
BCP
Ortho Tri-Cyclen
Estrostep
Controversial due to potential increase in blood clots
Recently – papilledema/hepatoxicity YAZ
Spironolactone
Off label
PI – check labs
25 – 50 mg BID
Teratogenic
IsotretinoinAccutane
www.accutanesideeffects.net
Acne
Inflammatory
• Apoptosis of oil glands
• Anti-inflammatory
• Anti- bacterial
• 60-80% cure rate
• Highly regulated by FDA
• Ipledge program
Isotretinoin
Isotretinoin
• Like hundreds of meds, it is not safe for use in pregnancy
• Gained FDA approval in 1982 under brand name Accutane
• Warnings include: IBD, birth defects, depression/suicidal ideation
• Clear and open communication is key
• Monthly visits are REQUIRED
DERMEXPRESS