Dermatology Flashcards
(48 cards)
Itchy rash face scalp eyebrows
seborrhoeic dermatitis
Red rash affecting face, with flushing, non-pruritic.
Can cause blepharitis/conjunctivitis
Acne Rosacea
1st line Tx for Acne Rosacea
Topical Ivermectin
(Brominidine gel, an alpha agonist, can be used PRN for flushing)
Red rash with silver scale/plaque
Psoriasis
Treatment for extensor psoriasis
Potent topical steroid + Vitamin D analogue (latter reduces plaque thickness)
Treatment for flexural psoriasis (incl groin/axilla/face)
Mild topical steroid only
(since skin thinner in flexures, so is plaque, so vitamin D no benefit)
Treatment for keloid scarring?
Intralesional steroid (triamcinolone)
Fungal nail infection involving <50% nail or 2 or fewer nails?
Topical anti fungal nail cream
Fungal nail infection involving >50% nail or more than 2 nails?
Oral terbenafine
There are 4 skin conditions that affect the shins. What are they?
-Erythema Nodosum (IBD, sarcoidosis)
-Pyoderma Gangrenosum (idiopathic, IBD)
-Pretibial myxoedema
-?Necrobiosis lipidium diabeticorum
Treatment escalation for psoriasis?
1) 4 weeks potent steroid OD and vit D analogue (calpotriol)
2) 8 weeks calpotriol only BD
3) 4 weeks potent steroid BD and continue calpotriol
4) PUVA (psoralen light UV sensitising cream + UVA therapy)
What does PUVA increase risk of?
Squamous Cell Cancer only
Peeling of epidermal layer under pressure, affecting >30% of skin area, following drug
Toxic Epidermal Necrolysis (TEN)
Seborrhaic dermatitis - what is it caused by?
How is it treated?
What are complications?
Caused by fungal infection (malassazia furfur)
Treat with ketoconazole
eyes and ears - blepharitis and otitis externa
What is acne rosacea?
How does it present?
What is the first symptom usually?
Difference between acne rosacea and malar rash in SLE?
Treatment escalation in acne rosacea?
Central Red rash affecting face - unknown cause
First flushing
Rash
telangiectasia
papules and pustules can form after
No other symptoms of SLE or systemic symptoms
Brominidine gel for flushing
Topical ivermectin +/- metronidazole or if papules/pustules doxycycline
camouflage cream to help hide
if no help, refer for laser
Most common side effect of isotretinoin?
dry skin
What nail changes can happen in psoriasis?
onycholysis, loss of nail, subungual hyperkeratosis
Are steroids used in acne rosacea?
NO!
Depigmentation, precipitated by hot, humid weather?
Pityriasis Versicolour
(fungal infection - malassezia furfur)
Which mineral deficiency causes angular cheilosis?
Zinc
Causes of hirsutism?
most common is PCOS
- Cushing’s
- Adrenal tumour
- CAH
NB// can be normal with women ageing, as post-menopausal oestrogen level is relatively low to androgen level
What do you treat strawberry navi (capillary hemangiomas) with if indicated?
Topical propranolol
What is the difference between cellulitis and necrotising fasciitis? (and erysipelas)
Cellulitis affects dermis, whereas nec fasc affects deeper connective tissue (fascia) and can extend into muscle. It requires emergency surgical debridement. Significant mortality.
Treatment of scalp psoriasis?
Potent topical steroid only - try 4 weeks. If no help try different formulation e.g cream/mousse
