Question 1

What is a macule?

Accepted Answer

A macule is a flat, discolored spot on the skin that is neither raised nor depressed, such as a freckle or flat mole. It measures less than 1 cm in diameter.

Question 2

What is the difference between a vesicle and a bulla?

Accepted Answer

Both are fluid-filled, raised lesions, but a vesicle is smaller than 0.5 cm while a bulla is larger than 0.5 cm. An example of a vesicle is a blister from poison ivy; a bulla is a large blister from a burn.

Question 3

What is a pustule?

Accepted Answer

A pustule is a small, raised lesion filled with pus. It is commonly associated with acne and infected hair follicles.

Question 4

What is a wheal?

Accepted Answer

A wheal is a raised, itchy lesion with an irregular shape caused by a localized allergic reaction or insect sting. Hives (urticaria) are a common example.

Question 5

What distinguishes a papule from a nodule?

Accepted Answer

A papule is a small, solid, raised lesion less than 1 cm in diameter, while a nodule is a larger, deeper solid lesion greater than 1 cm that extends into the dermis or subcutaneous tissue.

Skin Disorders – California Esthetician State Board Exam

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