What is the defining characteristic of a macule?

A flat, well-defined change in skin color, less than 1 cm in size.

Fill in the blank: A ______ is a small, solid elevation of the skin, less than 1 cm in size.

Papule

True or False: A bulla is a fluid-filled blister smaller than 1 cm.

False. A bulla is a larger, fluid-filled blister greater than 1 cm.

Riddle: I am a raised area on the skin, larger than 1 cm, formed by the confluence of smaller elevations. What am I?

Plaque

What type of lesion is characterized by a transient elevated edematous area often seen in urticaria?

Wheal

Fill in the blank: The presence of ______ is characterized by skin atrophy, telangiectasia, and pigmentation changes.

Poikiloderma

True or False: Erosions heal with scarring and are characterized by loss of the epidermis.

False. Erosions heal without leaving scars.

What is the term for the accumulation of neutrophils in the stratum corneum associated with psoriasis?

Munroe's microabscess

Riddle: I’m a mass on the skin larger than 2 cm. What am I?

Tumour

Which skin lesion is defined as a linear fissure in the skin?

Fissure

Fill in the blank: ______ refers to the presence of nucleated cells in the stratum corneum.

Parakeratosis

True or False: Hypergranulosis refers to thinning of the granular layer of the epidermis.

False. Hypergranulosis refers to an increase in the thickness of the granular layer.

What is the primary diagnostic purpose of a Tzanck smear?

To analyze blister fluid and underlying skin for specific dermatological conditions.

Riddle: I’m a test that uses a sharp needle to prick the skin and measure allergic reactions. What am I?

Skin prick test

What type of purpura is characterized by small, pinpoint marks?

Petechiae

Fill in the blank: A ______ is characterized by the thickening of the layer of spinous cells in the epidermis.

Acanthosis

True or False: Dermatomal lesions appear randomly across the skin.

False. Dermatomal lesions appear along the distribution of a spinal or cranial nerve root.

What is the significance of Wood's lamp examination in dermatology?

It helps identify specific skin conditions based on fluorescence patterns.

Riddle: I’m a condition where blisters form in the upper layer of the skin, often associated with autoimmune disorders. What am I?

Pemphigus foliaceus

Which condition is characterized by golden-yellow crusts and often seen in non-bullous impetigo?

Crust (scab)

Fill in the blank: ______ is the increased firmness of the skin upon touch.

Induration

True or False: Scales are formed from dried fluid mixed with skin cells and bacterial debris.

False. Scales are visible patches of shedding skin due to abnormalities in skin cell formation.

What is the term for a small fluid-filled cavity less than 1 cm in diameter?

Vesicle

Fill in the blank: The presence of ______ indicates a localized collection of pus deep within the dermis.

Abscess

True or False: Bullous pemphigoid is characterized by the presence of multinucleate acantholytic cells in Tzanck smear.

False. Tzanck smear is negative in bullous pemphigoid.

What type of skin lesion follows the Blaschko lines during embryogenesis?

Blaschkoid lesions

Riddle: I'm a blushing sign that fades with pressure but remains when the skin is bruised. What am I?

Erythema

Fill in the blank: The condition characterized by the presence of degenerated keratinocytes in the lower epidermis is called ______.

Colloid Body

What type of lesion is associated with the presence of hemorrhagic crusts in toxic epidermal necrolysis?

Crust (scab)

Fill in the blank: The ______ phenomenon is where lesions reduce in size after trauma.

Reverse Koebner's