Primary skin lesions

Question 1

Macule

Answer 1

Superficial 
Flat
1 cm
Regular border 
Just a color change

Question 2

Patch

Answer 2

Macule that is greater than 1cm

Examples: Mongolian spots or vertiligo

Question 3

Papule

Answer 3

Elevated due to the thickening of epidermis
Solid
Circumscribed
Examples: cherry angiomas, moles, warts, skin tags

Question 4

Plaque

Answer 4

Papule’s that have come together

Example: psoriasis

Question 5

Nodule

Answer 5

Elevated
Solid
Greater than 1 cm 
Extends into the dermis
Examples: Fibromas, melanomas, zenthomas

Question 6

Tumor

Answer 6

A larger nodule ( greater than few cm)

Can be firm or soft

Question 7

Wheal

Answer 7

Superficial
Raised
Slightly irregular border
Examples: mosquito bites, allergic reactions

Question 8

Hives

Answer 8

= Uticaria = confluence of wheals

Question 9

Vesicles

Answer 9

Elevated cavity filled with serous exudate
Less than 1 cm
Examples: blisters, herpes, chicken pox, shingles, contact dermatitis

Question 10

Bulla

Answer 10

Vesicles greater than 1 cm
Can rupture easily
Examples: friction blisters, significant contact dermatitis, blisters due to burns, lupus and drug reactions

Question 11

Cyst

Answer 11

Encapsulated fluid cavity filled with fibrous exudate

Question 12

Pustule

Answer 12

Encapsulated fluid cavity filled with pus