Dermatology Flashcards
ECZEMA
What is the management of extensive infection by dermatophytes?
- Oral terbinafine
How should a child with new-onset purpura be managed?
Immediate referral to secondary care to exclude ALL
Where are keloid scars most common?
Sternum
What is the management of athletes foot?
- Topical miconazole
- terbinafine
What medications exacerbate plaque psoriasis?
Beta blockers, lithium, antimalarias, NSAIDS and ACE
What should be used for long-term psoriasis?
Calcipotriol
What is pemphigoid gestationis?
Pruritic blistering lesions which in the peri-umbilical region and can then spread to trunk, back buttocks and arms in the 2nd/3rd trimester
When does pemphigoid gestationis present?
In the second/third pregnancy
How is pemphigoid gestationis managed?
Oral corticosteroids
What can make perioral dermatitis worse?
Topical steroids
What is the first line management of venous ulcers?
Compression bandaging
What is a rare side effects of penicllins?
Toxic epidermal necrolysis
What is the most common malignancy associated with acanthosis nigricans?
gastrointestinal adenocarcinoma
What are some causes of acanthosis nigricans?
- T2DM
- GI cancer
- PCOS
- Obesity
- Cushing’s disease
- Acromegaly
- COCP, nicotinic acid
- Hypothyroidism
- Familial
Acanthosis nigricans?
symmetrical, brown, velvety plaques that often found on neck, axilla and groin
Pathophysiology of acanthosis nigricans?
insulin resistance → hyperinsulinemia → stimulation of keratinocytes and dermal fibroblast proliferation via interaction with insulin-like growth factor receptor-1 (IGFR1)
purple, polygonal, pruritic papules suggest what?
Lichen planus
What is a port wine stain?
A vascular birthmark: deep red or purple colour usually over the cheek
What is a strawberry naevus?
A soft raised vascular swelling which is bright red in colour
What is a salmon patch?
A flat dull-red area usually on the face and neck, usually in the midline which causes no symptoms
What derm feature is associated with Sturge Webber syndrome?
Port wine stain
What is pityriasis versicolor?
A superficial fungal (Malassezia) infection which affects the trunk causing pink/brown patches, sometimes after a suntan
What is the management of pityriasis versicolor?
Topical antifungal: ketoconazole