dermatological manifestations in the elderly
TRANSCRIPT
Dermatological Manifestations in the Elderly
Sanjay Siddha
Staff Dermatologist
UHN & MSH
Disclosure
No actual or potential conflicts of interest or
commercial relationships to declare
Objectives
Recognize and manage
• common dermatosis in the elderly
• Melanoma
• Non Melanoma skin cancer
• Benign lesions
Facts about melanoma
• mean age of diagnosis around 50 yrs
• one of the less common forms of cancer
• Canadian life time risk male 1:75
female: 1:90
Melanoma
• Melanoma localized to skin cured by surgical excision
• Patients with advanced disease – poor prognosis
• Cost of treating (20%) stage III &IV : 90% total annual cost for treatment
• Early detection is the key
Early detection
• impractical to screen everyone
• identify & screen high risk patients
• biopsy of melanomas early
• observation/ monitoring of nevi
Risk factors: higher risk (approx. 10-fold)
• >100 normal moles
• >5 atypical moles
• ≥2 cases of melanoma in first degree relatives.
Risk factors: Lower (approx. 2 to 3 fold)
• freckles
• red hair or skin which burns in the sun
• any family history of malignant melanoma
Other risk factors
Relative risk
past personal history of
melanoma
5- 8%
11-25 nevi 1.6%
26-50 nevi 4.4%
51-100 nevi 5.4%
1-5 atypical nevi 3.8%
Skin type Typical Features Tanning ability I Pale white skin, blue/hazel eyes, Always burns, does not tan blond/red hair II Fair skin, blue eyes Burns easily, tans poorly III Darker white skin Tans after initial burn IV Light brown skin Burns minimally, tans easily V Brown skin Rarely burns, tans darkly easily VI Dark brown or black skin Never burns, always tans darkly
Features to look for in the nevi • A –asymmetry
• B- border
• C- colour
• D- diameter/dark
• E- evolving
Clinical Diagnosis of Melanoma
Patients detect 50% of melanomas (new or changing
lesion)
Detecting change is more useful
Ugly duckling sign
• Atypical nevus in a background of normal
appearing nevi
• More normal appearing lesion in a patient
with multiple clinically atypical nevi
Micro staging of cutaneous melanoma
Melanoma
Melanoma
• Early detection is essential and can be life saving!
• Surgical excision with 1 cm margins will cure 90% of patients with early melanoma (< 1 mm Breslow depth)
Location
Women commonly develop on the lower limb (50% of
women, 18% of men)
• Men : SSM or NM commonly develop on the trunk (35%
of men, 14% of women), especially the back.
• chronic sun exposure - head and neck
Melanoma-Types
• Superficial spreading melanoma
• Nodular melanoma
• Lentigo maligna melanoma
• Acral lentiginous melanoma
Types of primary cutaneous melanoma
Type frequency site
SSM 60-70% Lower extremities women
Trunk – men & women
NM 15-30% Trunk, head & neck
LMM 5-15% Face – nose & cheeks
ALM 5-10% Palms, soles & nail unit
Superficial spreading (SMM)
• most common • age 40 -60’s • risk factors :↑ nevi dysplastic nevi intermittent sun
exposure sunburn
Nodular melanoma (NM)
15% of melanomas
• nodule: enlarging,
bleeding/crusting
• elderly (M>F)
Lentigo maligna melanoma
• 10-15% of melanomas
• prolonged radial growth
• changing atypical
pigmented macule
• chronic UV exposure
(outdoor workers, elderly
people)
Acral lentiginous melanoma (ALM)
• 1-3% of melanomas
• flat lesion like SSM
• Common in dark skin
• No relationship to UV exposure
Subungual melanoma
• arises in nail matrix
• hutchinson sign
• more common in dark skin
Melanoma Prevention
• UVR is primary cause of most melanomas
• More risk: Intermittent exposure
Childhood exposure
Tanning beds < age 35yr
Childhood exposure ↑ nevi
Primary prevention
• Protection from the sun: avoidance and clothing
primarily.
• Sun protection factor (SPF) 30 and above,
• Five star: ultraviolet A (UVA) protection as an adjunct
Secondary prevention
• People with higher risk (10-fold) categories:
Refer for risk estimation and education
• Base-line photography: to monitor moles
• Dietary intake of vitamin D
Surgical management
Thickness
Excision margins
In – situ 0.5 cm
< 1 mm 1 cm (AAD 1cm for
<2mm)
1- 4 mm 2 cm (AAD 2 cm for
≥2mm)
> 4 mm 2- 3 cm
When to refer • new mole: growing quickly after puberty
• long-standing mole : changing progressively in shape or colour (any
age)
• any mole ≥ 3 colours or lost its symmetry
• any new nodule: growing and is pigmented or vascular in
appearance
When to refer (cont.) • new pigmented line in a nail
• something growing under a nail
• mole which has changed in appearance and
which is also itching or bleeding
Avoid Sun
• Even on a cloudy day, UV will get through to
the earth’s surface
• Sunlight is tricky - reflect off snow, water &
sand
Stratosphere - Ozone Layer
UVC
100-280
UVB
280-315
UVA
315-400 X-ray Visible Light
400-700
Dead Sea Level Sea Level
Sand
SEA
How much sunscreen?
• One ounce(shot glass)
• 30 ml
• Cover the exposed areas
of the body properly
Myths about sunscreen
• Retinyl palmitate: risk of skin cancer
• Oxybenzone: hormone disruptor
• Mostly in lab animals
Avoid mid day sun
Atmosphere
Surface
EARTH
Midday
Sun Directly Overhead
4pm
Y Y
X
UV Protective Clothing
• The finer the weave, the greater the
protection
• Silk is best
• Nylon stockings SPF of about 2
Sun protection: Save our skin
• Slip on a Shirt
• Seek out Shade
• Step out of the Sun –Ouch!
• Slap on Sunscreens
Case 2
Case 2
Immediate Care
• Speak to a dermatologist
• Topical Dermovate ung b.d.
• Vaseline ung
• Treat any secondary bacterial infection
Severe Bullous Pemphigoid • Widespread tense blisters of skin & mucosa
• Antigen: BPAg1 & 2 (hemidesmosome at the epidermal-
dermal junction)
• Elderly patients, 6-7 new/million
• Rarely drug induced
Management
• clobetasol propionate 0.05% cream (20 g) applied
• 2 times day, including clinically unaffected skin (total
daily dose 40 g),
• oral prednisone 1 mg kg daily
• A significant benefit of the former - extensive disease
(more than 10 new blisters a day) for disease control,
adverse events and mortality.
Management
• Skin biopsy: Lesional for H&E
Perilesional for DIF
• Oral steroids
• Steroid sparing agents
• Tetracycline +/- nicotinamide
Xerotic eczema (eczema craquelé)
Scurvy
Sebaceous gland hyperplasia
Dermatosis papulosa nigra
Stucco Keratosis
Seborrheic Keratosis
Skin Cancer
• Basal cell carcinoma (BCC): most common
• Squamous cell carcinoma (SCC)
• Melanoma: 4% skin cancers
Keratoacanthoma
Basal cell carcinoma - Pigmented
Basal cell carcinoma
Cystic BCC
Sclerosing BCC
Cutaneous Horn
Actinic Keratosis
Bowen’s Disease
Bowen’s disease
Management of AK Cryotherapy 5FU Zyclara (Imiquimod
3.75%)
Curettage
Low No. of AK’S 4 4 3 1
High No. of AK’S 3 4 3 1
Thin AK’S 3 4 3 1
Hypertrophic AK’S 2 1 1 4
Isolated Not responding
2 1 1 4
Scalp, Nose, Ears , Cheeks, forehead
4 4 4 3
Periorbital 3 1 1 3
Below Knee 3 1 1 4
Back of Hands 4 4 3 3
Dermatology MCQ
Sanjay Siddha
1. What is your diagnosis?
What is your diagnosis?
A. Seborrheic Keratosis
B. Pigmented Basal cell carcinoma
C. Melanoma
D. Squamous cell carcinoma
2. What is your diagnosis?
2. What is your diagnosis?
A. Contact dermatitis to Poison Ivy
B. Bullous pemphigoid
C. Herpes Zoster
D. Irritant contact Dermatitis
3. Incidence of Melanoma Which one is true?
A. In increasing across all age groups
B. Is decreasing in the Elderly Population
C. Is increasing in the Elderly population
D. Is increasing in the younger age group 20-
40yrs
4. Bullous Pemphigoid Which one is true?
A. Is a Para neoplastic condition
B. Is an autoimmune blistering condition
C. Common in young adults
D. Common in the Elderly
E. All of the above