1.
Vitiligo is an autoimmune condition with a loss of melanocytes and pigment from affected tissues.
2.
A papule is a well-circumscribed flat discolored area 0.5 cm in diameter.
3.
Sun avoidance and SPF will help to fade ephelides and prevent new ones from forming.
4.
Solar Lentigo, or a liver spot, is on chronically sun-exposed skin and will lighten in time with sun avoidance and SPF.
5.
Purpura are large dermal hemorrhages that occur most often from blunt trauma.
6.
A plaque may be formed from the confluence of multiple papules and are greater than 0.5 cm.
7.
An acrochordon, or skin tag, can be easily removed by snipping with curved iris scissors, electrocautery, or cryotherapy.
8.
A fibrous papule is a dome-shaped, firm, flesh-colored macule with a broad base.
9.
Xanthelasma, or macules possibly associated with hyperlipidemia, are usually found on the alae of the nose and canthus of the eye.
10.
Milia are small black cysts of the upper segment of a hair follicle.
11.
Degeneration of nevi into melanoma is relatively common, 1:2,500.
12.
Intraorally, 75% of nevi are dysplastic.
13.
Cutaneous melanomas have predisposing factors such as positive family history, light natural pigmentation, and exposure to sunlight.
14.
50% of all melanomas occur on the head and neck.
15.
Vertical growth of a cutaneous melanoma has a greater metastatic potential and worse prognosis.
16.
Seborrheic Keratosis may have a keratotic crust that is loosely attached and the surface may be rough or warty.
17.
Seborrheic Keratosis is a malignant epidermal proliferation and can be removed by electrocautery or cryotherapy.
18.
Perioral dermatitis can be caused by topical steroids, tartar control dentrifices, and chronic habits.
19.
Basal cell carcinoma is rarely metastatic and has a good prognosis.
20.
A basal cell carcinoma lesion is an indurated pearly papule or nodule with telangiectic vessels coursin over its surface.
21.
Squamous cell carcinomas are seen on the upper lip and above.
22.
A wheal is produced by vasodilation and fluid leakage secondary to histamine release from mast cells and basophils.
23.
Actinic keratoses is usually found in individuals who have had long-term exposure to sunlight, usually people who work and play outdoors.
24.
Most warts regress spontaneously within 2 weeks.
25.
Perleche is another name for angular cheilitis.