Disease Patterns Flashcards
What is pityriasis versicoloured?
Superficial slightly scale infection with the yeast Malassezia furfural
Appears hypopigmented on darker skin
What is pityriasis alba?
Post-eczema hypopigmentation often on children’s faces
What is vitiligo?
Smooth white depigmented patches or macule
Associated with autoimmunity - particularly thyroid disease
Mx: sun protection, cosmetic camouflage,
What are lentigos?
Brown macule/patches that persist in winter (unlike freckles)
Solar lentils are found in older patients
Lentigo maligna is a subtype of melanoma in situated may progress to lentigo malignancy melanoma
What are cafe au last spots?
Faint brown macules
If > 5 consider neurofibromatosis
What is melasma?
Smooth brown patches especially on the face related to pregnancy or oral contraceptive use
What are melanocytic naevi?
Moles
What are seborrhoeic warts/keratoses?
Benign greasy-brown warty lesions usually on the back, chest, face
Very common in elderly
Describe a BCC
Pearly papule with central ulcer
What are tinea?
Ringworm lesions are young scaly and itchy with central healing
What is granuloma annular?
Chronic non-infectious inflammatory ring-shaped lesion often on the back of hands
What is erythema multiforme
Target like lesions often on extensor surfaces
What is Bowen’s disease?
Slow growing red, scaly plaque
What is psoriasis?
Well defined scaly red, pink plaques
Distribution on extensor surfaces, scalp and natal cleft distinguishes from discoid eczema
What is discoid eczema?
Itchy crusted scaly eczema worsened by heat
