1. Tinea versicolor is a common superficial fungal infection of the skin,
causing hypo or hyperpigmented (“versicolor”), slightly scaly macules
on the trunk, neck, and upper arms (short-sleeved shirt distribution).
They are easier to see in darker skin and may be more obvious after
tanning. In lighter skin, macules may look reddish or tan instead of
pale.
2. Tinea corporis has annular lesions with central clearing and papules on
the borders. This is usually seen in children.
3. Vitiligo may exhibit depigmented macules appear on the face, hands,
feet, extensor surfaces, and other regions; and may coalesce into
extensive areas that lack melanin.
- Hereditary
4. Ichthyosis vulgaris is a skin disorder that causes thin flakes of dead
exfoliated epidermis.
5. Melanoma-- dark, raised, asymmetric lesion with irregular borders may
be a melanoma.
6. A squamous cell carcinoma has a raised, crusted border with central
ulceration on the lesion. Biopsy confirms the diagnosis.
- Squamous cell carcinoma appear on sun exposed skin of fair
skinned adults over sixty and look like scaly red patches, open
sores, elevated growths with a central depression, or warts; they
may crust or bleed.
7. Basal call carcinoma can present as a red raised nodule with a lustrous
surface and telangiectatic vessels with or without ulceration. It occurs
more frequently in fair -skinned people who have been exposed to
large amounts of sun.
- basal call carcinoma of the eyelid is uncommon, it does occur
most often on the lower lid and medial canthus. It looks like a
papule with an ulcerated center. Metastasis is rare but
should be referred for removal.
- Basal cell carcinoma typically presents with an initial translucent
nodule that spreads, leaving a depressed center, a firm elevated
border, and visible telangiectatic vessels. They usually appear in
adults over forty and seldom metastasize.
8. Kaposi's sarcoma is seen in patients with AIDS and appears in many
forms and on any part of the body. The abnormal cells form purple, red,
or brown blotches or tumors on the skin and can become life
threatening when the lesions are in the lungs, liver, or digestive tract.
9. A cutaneous cyst is a benign, closed sac that lies in the dermis,
forming a dome shaped lump.
, Skin
10. Tophi are identified as deposits of uric acid crystals secondary to
gout and appear as hard nodules in the helix or antihelix.
11. Chondrodermatitis Nodularis Helicus is a condition with painful
nodules that develop on the rim of the helix (where there is no
subcutaneous tissue). This develops a result of repetitive mechanical
pressure or environmental trauma (sunlight). They are small,
indurated, dull red, poorly defined, and painful.
12. Impetigo usually appears as red crusty lesions on the face,
especially around a child's nose and mouth. The lesions burst and
develop honey-colored crusts.
13. Varicella is characteristic of papules, vesicles, and crusted lesions
occurring simultaneously.
14. Herpes simplex on the lips and mouth appear as small vesicles or
blisters and are termed "fever blisters" or "cold sores".
15. Shingles appear as vesicles or blisters in clusters along the entire
path of the nerve or in certain areas supplied by the nerve.
16. Verruca plana are small, flat warts located on superficial surfaces
of the skin.
17. Verruca vulgaris are dry, rough warts located on the hands. Small
tender warts located on the superficial surfaces of the feet are plantar
warts.
18. Molluscum contagiosum are dome-shaped, flashy lesions and are
located anywhere on the skin.
19. Seborrheic keratoses are common, benign, yellowish to brown,
raised lesions that feel slightly greasy and appear velvety and warty.
They usually appear on trunk and face of the elderly.
20. Actinic keratoses are superficial, flattened papules covered by a
dry scale and can appear pink, gray, or tan in color. They appear on
sun exposed skin of older fair-skinned persons.
21. Actinic purpura-- Well-demarcated vividly purple macules or
patches; Skin on the backs of the hands and forearms appears thin,
fragile, loose, and transparent. There may be purple patches or
macules, termed actinic purpura, that fade over time. These spots and
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