Describing lesions Flashcards
What is a comedone
Plug in a sebaceous follicle containing sebum, bacteria and debris
Can be open (blackheads) or closed (whiteheads)
Words to describe the lesions distribution (5)
Generalised/localised Flexural/extensor Pressure areas I.e sacrum, ankle, heel Dermatomal Photosensitive (exposed areas I.e face, neck, back of hands)
What is a Koebner rash
Linear rash at site of trauma
Words to describe configuration/pattern of grouped lesions (6)
Discrete - individual separate lesions Confluent - lesions merge Linear Target - concentric rings e.g erythema multiforme Annular - circle e.g tinea corporis Discoid - coin sized
Words to describe colour of a lesion (5)
Erythema - red discolouration that blanches on pressure
Purpura - purple discolouration that does not blanch on pressure
Hypopigmentation
Depigmentation
Hyperpigmentation
Words to describe morphology of a primary lesion (9)
Macule - flat area of altered colour e.g freckle
Patch - large macule e.g port wine stain
Papule - solid raised lesion <0.5cm
Nodule - solid raised lesion >0.5cm
Plaque - palpable raised lesion with a scale
Vesicle - raised clear fluid filled lesion <0.5cm
Bulla - raised clear fluid filled lesion >0.5cm
Pustule - pus containing lesion <0.5cm e.g acne
Abscess - localised pus containing lesion
What is a boil
Staph infection around/within hair follicle
What is a carbuncle
Staph infection of adjacent hair follicles I.e multiple boils
Words to describe morphology of secondary lesions (8)
Excoriated - loss of epidermis e.g after scratching
Lichenified - roughening of skin with accentuation of skin markings
Scale - flakes of stratum corneum
Crust - rough surface consisting of dried serum, blood, bacteria and debris e.g impetigo
Scar - new fibrous tissue
Ulcer - loss of epidermidis and dermis
Fissure - epidermal crack often due to dryness
Striae - linear areas with scar appearance changing rom purple to pink to white
Words to describe hair distribution
Alopecia
Hirsutism
Hypertrichosis - excessive hair growth independent of androgens e.g in a mole or around ear
Causes of clubbing
Inflammatory bowel disease Bronchial carcinoma Cyanotic heart disease Idiopathic lung fibrosis Paraneoplastic syndrome
What is onycholysis
Separation of distal end of nail plate from nail bed so appears white
Causes of onycholysis
Trauma
Psoriasis
Fungal nail infection
Types of purpura
Petechia - pinpoint macules
Ecchymoses - large patches e.g raccoon eyes
