Primary Skin Lesions: Macules, Papules, Nodules

What distinguishes primary lesions from secondary lesions in dermatology?

A dermatologist observes a small, circumscribed skin discoloration of 0.7 cm in diameter. According to the classification of skin lesions, what term would MOST accurately describe this?

A patient presents with several flat, depigmented areas on their skin, each approximately 2 cm in diameter. Considering the size and appearance of these lesions, how should they be classified?

A raised, solid lesion on the skin is measured to be 0.4 cm in diameter. Which term BEST describes this type of primary lesion?

A physician identifies a solid, raised skin lesion that is 0.8 cm in diameter and extends deeper into the dermis. Which of the following BEST describes this lesion?

Which characteristic of a plaque distinguishes it from other types of skin lesions?

How does a vesicle differ from a bulla?

A dermatology patient has a fluid-filled lesion with a diameter of 0.7 cm. The MOST appropriate term to describe this lesion would be:

What is one key characteristic that differentiates a cyst from a vesicle or bulla?

A patient presents with transient, edematous, and itchy skin elevations. Which primary lesion is MOST consistent with these symptoms?

A dermatologist identifies a 'black head' during a skin examination. How should this lesion be classified?

A linear skin lesion is observed, caused by a mite tunneling within the epidermis. What specific type of primary lesion is this?

Which process leads to the formation of secondary skin lesions?

What distinguishes a furrow from a burrow in dermatology?

Which of the following BEST describes a pustule?

What is the composition of a scale, as it relates to skin lesions?

What primary substance forms a crust on the skin?

How does an erosion differ from an ulcer in terms of skin layer involvement?

Which layer(s) of the skin are affected in an ulcer?

What differentiates an excoriation from an abrasion?

Which skin layer(s) are affected by a fissure?

A patient presents with a cluster of small, raised lesions, each filled with clear fluid and less than 0.5 cm in diameter. Which term BEST describes these lesions?

A chronic skin condition presents with large, raised areas that are distinctly different in texture and consistency from the surrounding skin. These elevated areas do not appear particularly deep. What type of primary lesion would BEST describe this presentation?

A dermatologist notes a lesion described as 'circumscribed'. What does this term indicate about the lesion?

In distinguishing between a papule and a nodule, what is the MOST critical factor to consider?

A patient reports intensely itchy skin with several small, raised, linear lesions visible between the fingers. What primary lesion is MOST likely present?

A patient has a localized loss of the epidermis after a mild burn, but the dermis remains intact. This would BEST be described as:

A patient presents with several areas of dry, flaky skin resembling scales. What is the primary component of these skin lesions?

After a minor cut, a dried, hardened area forms on the skin. What is the MOST accurate term to describe this?

A deep scratch caused by a fingernail results in damage to the epidermis, but not as deep as a fissure. This is best described as which type of secondary lesion?

Which of the following skin lesions is MOST likely to result in scarring?

A hiker develops a small, linear crack on the heel of their foot. The crack extends through the epidermis and slightly into the dermis, causing some discomfort. The MOST likely diagnosis is:

A patient presents with urticaria. What type of primary lesion is characteristic of this condition?

A patient exhibits multiple small, yellowish papules on their forehead. These are identified as 'white heads'. What is the correct classification for these lesions?

A patient with scabies presents with intense itching and small, linear lesions in the web spaces between their fingers. The lesions are MOST likely:

A patient presents with a de-roofed burrow secondary to scratching. The MOST accurate term for this secondary lesion is:

A patient has small elevations on their skin containing pus. These are BEST described as:

A patient with psoriasis is MOST likely to present with which type of skin lesion?

A patient presents with dried serum and blood on the surface of a scratched insect bite. This is BEST described as:

A patient presents with several solid, raised lesions on their skin. Some are 0.3 cm in diameter, while others are 0.7 cm. According to diagnostic criteria, which of the following is the MOST accurate way to classify these lesions?

A patient exhibits signs of urticaria. Which primary lesion is MOST typically associated with this condition?

A dermatologist is examining a patient with acne and observes both 'black heads' and 'white heads'. How should these lesions be classified in terms of primary lesions?

In a case of scabies, the primary lesion is described as a tunnel within the epidermis caused by a mite. This lesion is BEST described as which of the following?

A patient presents with a cluster of small, purulent elevations on the skin. These lesions could be MOST accurately described as: