Dermatology Flashcards
Rosacea + pustules/papules - what treatment ?
Topical ivermectin + oral doxycycline
Guttate psoriasis vs pityriasis rosea ?
Guttate = preceded by viral infection a few weeks prior
Pityriasis rosea = herald patch followed 1-2 weeks later by rash
Non-sedating antihistamine?
Cetirizine, loratadine
Dermatophyte fungal infection e.g. Trichophyton rubrum - management ?
(makes up 90% of fungal infections)
Oral terbinafine
- don’t need to treat if patient unbothered by appearance
Candida fungal infection - management ?
(makes up 5-10% of fungal infections)
Oral itraconazole
- don’t need to treat if patient unbothered by appearance
Medications that can exacerbate psoriasis ?
Beta blockers
Lithium
Antimalarials (chloroquine and hydroxychloroquine)
NSAIDs
ACE inhibitors
Infliximab
Leg ulcer, ABPI normal =
Venous ulcer
Arterial supply is fine, must be a venous ulcer
Normal ABPI = 1 (0.9-1.2 is normal range)
<0.9 = arterial ulcer
Most likely cutaneous finding in DVT = ?
Livedo reticularis - a purplish, lace-patterned discolouration of the skin
Tiny, white papules on nose of neonate =
Milia (retention of keratin within the epidermis of 50% of neonates)
Multiple small, raised, flesh-coloured or pearly white papules with a central dimple (umbilication) = ?
Molluscum contagiosum
Acute urticaria management ?
Non-sedating antihistamines e.g. cetirizine, loratadine
hypopigmented or hyperpigmented macules and patches on the chest and back
- often become more noticeable with tanning
Pityriasis versicolor
- caused by Malassezia furfur (yeast infection)
Tinea corporis a.k.a.
Ringworm
Which Herpes virus causes Kaposi’s sarcoma?
HHV-8
(Human Herpes Virus 8)
in HIV-infected individuals
Net-like distribution, reticulated area of hyperpigmentation or erythema with telangiectasia - affects area with prolonged exposure to heat e.g. hot water bottle, open fire etc.
Erythema ab igne
(ab igne = by fire)
Dark, velvety tongue + weight loss =
Acanthosis nigricans
in GI malignancy like gastric or pancreatic cancer
(25% of AN found in mouth)
Psoriasis topical corticosteroid regimen?
Aim for a 4-week break between courses
Telogen effluvium pattern of hair loss ?
Diffuse thinning
- temporary form of hair loss caused by a disruption in the normal hair growth cycle
- can occur after significant stress or hormonal changes (such as childbirth)
Pompholyx eczema = ?
Vesicular palmar eczema
- acute eruptions of deep-seated vesicles in the palms and fingers, which are followed by scaling and fissuring of the affected areas
- may be precipitated by humidity (e.g. sweating) and high temperatures
Multiple lip telangiectases =
HHT (hereditary haemorrhagic telangiectasia)
- 90% get recurrent nosebleeds (epistaxis)
