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Primary Care Derm
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Seborrheic Keratoses Stuck on, white, tan, brown, black papules
Smooth with pearls Rough, cracked Mimic melanoma In darker skin on the face called dermatosis papulosis nigricans Can treat with LN2, currette or active nonintervention
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Seb Ker
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Cherry Angiomas
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Pyogenic Granuloma Lobular Capillary Hemangioma Band-aid sign
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Venous Lakes
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Lentigo
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Poikiloderma of Civatte
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Cutis Rhomboidalis Nuchae
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Dermatofibroma Seen more commonly females on the leg
Dimple sign- retraction with palpation (feels like pea under skin) benign
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Epidermal Inclusion Cyst
Soft mobile masses, sometimes with punctum Excision (need to remove cyst wall) is the only way to get rid of them If inflamed, can inject with steroid
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Basal Cell Carcinoma Risk Factor for BCC: inability to tan
Different types of BCC: nodular, superficial, micronodular, infiltr, morpheaform Head- most common site for BCC Needs surgical excision with about 3 mm margins, send to derm or MOHs
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BCC
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Actinic Keratoses Premalignant
Can process to SCC (3-8% if left untreated) Distinguish two by biopsy Treat with LN2
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Actinic Keratoses Scaly erythematous macules
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Squamous Cell Carcinoma
Cumulative sun exposure Found on scalp, hands, ears, lips Need to biopsy Treat with surgical excision 5 mm margins, Send to derm or MOHs
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Squamous Cell Carcinoma
Keratoacanthoma- subtype that evolves rapidly
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Nevi Junctional nevi- melanocytes in the epidermis only, flat pigmented or flesh colored macules Congenital nevi are nevi present at birth, they tend to be larger and darker
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Nevi Compound Nevus- melanocytes in the epidermis&dermis
Intradermal Nevus- melanocytes in dermis only
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Dysplastic Nevi Diagnosis made by pathology Melanocystes look atypical
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Melanoma Superfical spreading- most common type
Greatest relative risk: personal h/o atypical moles, family h/o melanoma, > moles
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Melanoma If thinking melanoma, do excisional bx
Treatment for melanoma is excision (margins depend of depth of melanoma)
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Paget’s Disease On breast, associated with adenocarcinoma
Can look like nipple ezcema
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Inflammatory
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Acne Mild, noninflamm acne (open and closed comedones)
Treat with benzoyl peroxide wash qam, clindamycin qam, and retina qpm Advise pt acne will get worse 4-6 wks, may take up to 3 mos for improvement (do not back earlier than 3mos)
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Acne (moderate to severe)
Typically requires oral antibiotic (doxy 100mg BID or tcn 500 mg bid, then minocin 100 mg bid) or accutane In addition to topical clindamycin, retina, benzoy peroxide wash
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Cystic Acne
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Rosacea Treat with metrocream bid, azelaic acid bid, or PO tetracycline No good treatment to get out redness, can use laser therapy Avoid triggers
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Rosacea
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Seborrheic Dermatitis
Treat with nizoral cream bid, nizoral shampoo as face wash, sometimes low dose top steroid (desonide) Typically seen in adult men
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Seb Derm
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Ezcema Atopic dermatitis- typically occurs in children, improves as adults Treat with moisturizers (and lots of them eucerin, aquaphor, cetaphil), cetaphil soap in shower, top steroids (tac ointment bid for 3 wks then off for 1 wk), oral antihistamines (zyrtec qam and atarax qpm) Sometimes use cyclocort lotion or dermasmoothe solution
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Ezcema
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Dyshidrotic Ezcema Pomphylox Ezcema on the hands/feet in adults
Develop little blisters/peeling/erythema Confused with tinea or pustular psoriasis (also check KOH) Treat with moisturizer eucerin and strong topical steroid (lidex or clobetasol), limit hand washing (use cetaphil soap)
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Hand Ezcema
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Nickel Most common allergen Commonly seen in kids w atopic derm
Belt buckles, pants buttons, watches, jewelry Pt needs to stop wearing product, can sew patch over pants button or paint clear nailpolish Treat with topical steroid (tac or lidex bid for several weeks)
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Psoriasis Seen in males/females, all ages
Auspitz sign- pinpoint bleeding when removing scale Typically have papule and plaques with silvery scale Subtypes include guttate, palmoplantar, pustular, inverse
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Psoriasis
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Psoriasis
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Inverse Psoriasis
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Psoriasis Treatment: if guttate psoriasis- check for strep and if positive treat Moisturizer to areas, topical steroid (lidex) alternating with dovonex, light therapy
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Lichen Planus Pruritic, Planar, Polygonal, Purple Papules
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Lichen Planus Typically around joints (wrists, ankles)
No great treatment, topical steroids provide some relief, if severe may need oral immunosuppresants
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Acne Keloidalis Nucha Occurs more commonly in darker skinned pts
Bumps on the back of the neck, can develop into keloids Treat with doxy for sev mos, top clindamycin, and clobetasol soln
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Pseudofolliculitis Barbae
Treat with retina, top antibiotics, hydroquinone, stop shaving, laser (laser works the best) Can develop scarrring and keloids from inflammation
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Acanthosis Nigricans Seen in obesity, diabetes, pineal tumors, idiopathic ( overweight teenage girls) No treatment
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Hidradenitis Suppurativa
Double comedones, cysts, sinus tracts Treat with oral and topical antibiotics, hibiclens/benzoyl peroxide to wash, sometimes accutane, surgery
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Capillaritis Schamberg’s Dz Pigmented purpura Cayenne pepper
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Stasis Dermatitis Older individuals Blood supply is compromised
Treat with exercise, compressive stockings, emollients Many times misdiagnosed as cellulitis refractory to antibiotics
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Stasis Dermatitis
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Lipodermatosclerosis
Women, lower 1/3 of lower legs c high BMI Mimic cellulitis-warm and red Woody induration from fibrosis of subq fat Venous Insuff
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Miliaria Retention of sweat as a result of occlusion of eccrine ducts
Hot, humid climates Bundled children, bedridden patients
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Erythema Ab Igne
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Sarcoid Diagnosis by biopsy- will have granulomas
Erythema nodosum is a nonspecific finding seen in sarcoid Can have lung involvement
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Erythema Nodosum Looks like bruising on lower legs
More commonly seen in women Seen with URI, Sulfa drugs, sarcoid, pregnancy, infection, estrogen Treat with rest, NSAID
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Alopecia Areata Typically treat with intralesional steroid injections (start at 10 mg/cc ILK, inject 1-3 cc every 4-6 wks) Can resolve without treatment Can be seen with autoimmune thyroid dz or vitiligo
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Pityriasis Rosea Viral infection
Herald patch- first lesion typically larger Can have in christmas tree distr on back Treat with emycin for 14 days, if itchy- treat itch
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Scabies Need to do scabies prep (seeing burrows in skin is not definitive) Found on finger webspaces, wrist, waist, penis Treat with elimite, kwell (lindane- can cause neurotoxic), (do not treat with Nix), ivermectin
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Molluscum Treatment includes currettage, aldara, cryosurgery
Umbilicated papules Virus- if left untreated with resolve in about 1 yr In adults seen in pubic area as STD
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Herpes (HSV) Virus, it diagnosed early can be treated with acyclovir
Causes lip and genital lesions In pts with ezcema, can be generalized Associated with erythema multiforme
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Erythema Multiforme Targetoid lesions on body
Can occur after HSV, mycoplasma pneumonia Treat is symptomatic, top steroids, if itchy antihistamines Treat HSV with acyclovir
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Herpes Zoster Grouped vesicles on an erythematous base
To treat herpes zoster: acyclovir (decreases neuralgia if given in first 48 hrs), narcotics, topical for itching
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Verruca Virus- will go away in 3-7 yrs if left untreated
Use destructive methods to treat warts: paring down, LN2, aldara, podocon, cantharone Flat warts more typically on face
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Genital Warts
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Staph Aureus Most common offender of skin infections
Causes carbuncles, treat with warm compresses, I&D with iodoform gauze, bactroban, sometimes oral antibiotics Causes bullous impetigo (get honey colored crust) Community acquired Staph common in Iraq, treat c clinda or bactrim, bactroban to nares/fingernails, hibiclens
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Impetigo
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Cellulitis Area is erythematous, tender to palpation, warm to touch
Diff: DVT, Erythema Nodosum, Fixed Drug, and Stasis Dermatitis Treat with oral antibiotics (staph/strep coverage)
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Tinea Versicolor Caused by Pityrosporon orbiculare, ovale, and globalis Treat with oral and topical ketoconazole Fluorescence pale white/yellow with wood’s lamp
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Tinea Tinea pedis can look like dyshidrotic ezcema, look for maceration btwn toes Most commonly caused by T. rubrum (which is cause of many cutaneous tinea infections) If extensive, may need to treat with oral lamisil (terbinafine)
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