Dermatology Flashcards
Which features are seen in lichen planus?
Purple, pruritic, papular, polygonal rash.
Oral involvement common (Wickham’s striae)
Which conditions are associated with hirsutism?
PCOS
Cushing’s syndrome
CAH
Androgen therapy
Obesity
Adrenal tumour
Androgen secreting ovarian tumour
Drugs - phenytoin, corticosteroid
Which skin conditions are associated with diabetes?
Necrobiosis lipodica
Infection
Neuropathic ulcers
Vitiligo
Lipoatrophy
Grannuloma annulare
What can exacerbate plaque psoriasis?
Trauma
Alcohol
Drugs - B-blockers, lithium, anti malarial, NSAID, ACEi, infliximab
Withdrawal of systemic steroids
How is mild to moderate acne rosacea treated?
Topical ivermectin
How is moderate to severe acne rosacea treated?
Topical ivermectin + PO doxycycline
When should molluscum contagiosum be referred to secondary care?
HIV positive patients
Eyelid margin, ocular lesion, red eye
Describe the features of guttate psoriasis?
2-4 weeks prior streptococcal infection
Tear drop papule on trunk/limbs
Acute onset over days
Most spontaneously resolve
Which cancer is Tylosis associated with?
Lymphoma
Which cancer is Acquired ichthyosis associated with?
Oesophageal
What is the first line treatment of acne vulgaris?
12-week course of topical combination therapy:
a fixed combination of topical adapalene with topical benzoyl peroxide
a fixed combination of topical tretinoin with topical clindamycin
a fixed combination of topical benzoyl peroxide with topical clindamycin
What are the causes of erythema nodosum?
Infection: streptococci, tuberculosis, brucellosis
systemic disease: sarcoidosis, inflammatory bowel disease
Behcet’s, malignancy/lymphoma
drugs: penicillins, sulphonamides, combined oral contraceptive pill
pregnancy
How should scalp psoriasis be treated?
Potent topical corticosteroids used once daily for 4 weeks
What is Curlings ulcer?
Acute peptic stress ulcers. Can occur in burns patients
