Definitions - Primary Lesions/Rashes

Question 1

What is a macule?

Answer 1

Flat area of altered colour

eg freckle

Question 2

What is a papule?

Answer 2

Solid raised lesion under 0.5cm

Question 3

What is a nodule?

Answer 3

Solid raised lesion over 0.5cm

Question 4

What is a patch?

Answer 4

Large area of flat altered skin

Question 5

What is a plaque?

Answer 5

Palpalble, scaly, raised lesion - like it has been stuck on

Question 6

What is a vesicle

Answer 6

Small blister

Raised clear fluid filled lesion less than 0.5cm

Question 7

What is a bulla?

Answer 7

large blister

Raised clear fluid filled lesion more than 0.5cm

Question 8

What is a pustule?

Answer 8

Blister flled with pus

Question 9

What is an abscess?

Answer 9

A localised accumulation of pus in the dermis or subcutaneous tissue

Question 10

What is an ulcer?

Answer 10

An involuted lesion with the loss of dermis or epidermis

Question 11

What is skin crust?

Answer 11

Rough surface containing of serum, blood, bacteria. eg - impetigo

Question 12

What is a comedone?

Answer 12

Plug in sebaceous follicle

Open - blackhead

Closed - whitehead