Flashcards in Derm/Minor surgery Deck (31):
Blue macules among the pubic hair is likely what infection?
Descibe the clinical signs and symptoms of measles
iv.) Koplik spots
v.) Descending maculopapular rash
What are the main symptoms of mumps?
iii.) Aseptic Meningitis
Brown-Pearly papule typically on the face with telangiectasia
Basal Cell Carcinoma
Orange peel lesion from a superficial lymphatic infection
Tinea Versicolor is caused by what microorganism?
Pityrosporum orbiculare (a yeast).
Note: it is not contagious!
Describe how gas gangrene forms
1.) Clostridium perfringens infection
2.) Lecithinase (alpha toxin) produced
3.) Mass necrosis of peripheral tissue
4.) Degradative enzymes ferment muscle sugars and produce gas crepitations leading to gas gangrene
Cat Scratch Fever is caused by what bacteria?
Bartonella henselae (transmitted by cat bites and potentially by licking)
Describe the progression of cutaneous anthrax signs and symptoms
1.) Incubation of 2-5 days
2.) Erythematous papules that become vesicular.
3.) Lesions ulcerate over 7-10 days
4.) Black eschar (necrosis) develops around an edematous base forms.
5.) Usually resolves but can develop into fatal sepsis
What HPV strains are associated with common warts?
How do you differentiate a mealses rash from rubella?
Rubella = truncal
Measles = starts on head and travels in a descending pattern
Erythematic papules arranged in a circle. This skin lesion arises from leukocytosis and subsequent WBC clumping in the superficial blood vessels of the dorsum of the hands and feet
Urticaria that presents as small papules during stress, exercise, or overheating
In what patient is guttate psoriasis most frequently present in?
Young adults who have recently had a bacterial infection- such as an URI (strep throat).
The lesions typically present as small erythematic macules on the trunk and upper proximal extremities; treated with mild steroids (hydrocortisone) & sun exposure
What age group is most likely to experience pemphigus vulgaris?
Middle-aged and older patients
This skin lesion is pruritic, polygonal, purple papules with reticular white lines on the surface (Wickham striae)
Polygonal means it has straight edges
What subtype of melanoma is the most aggressive?
What is the most common causative agent for impetigo?
Streptococcus pyogenes or Staph aureus
What subtype of melanoma most commonly occurs in darker-skinned people?
Acral Melanoma (typically occurs on palms & soles or nail beds)
Aggressive version of melanoma
What is Koebner's phenomenon?
Skin lesions which appear at the site of injury (or scratching)
Well-differentiated squamous cell carcinoma that develops rapidly and then regresses spontaneously
A common type of urticaria in which the skin becomes inflamed and raised when scratched or rubbed
What do tinea versicolor lesions look like?
Macules that often coalesce and may be white, pink, salmon, red, tan, or even brown. The lesions may scale and there may be mild pruritis.
The spots become more noticeable as the skin tans because the yeast (Pityrosporum orbiculare) prevents the underlying skin from tanning.
What allele variant is psoriasis associated with?
Benign skin growth that originates from keratinocytes. These lesions are found on sun-exposed areas of older people
This topical medication is used in people with psoriasis and eczema that is non-responsive to less potent corticosteroids such as hydrocortisone
Dexamethasone is more potent that mometasone
i.) Clinical Use = Severe Nodular Acne
a.) Synthetic High Dose Vitamin A that reduces sebum production and regulates epithelial cell growth
iii.) Side Effects
iii.) Side Effects
a.) Palpitations & Tachycardia
c.) Crohn's & UC
d.) Alopecia, Decreased Night Vision, DDD, arthralgia, keloids, dry eyes, and dry skin all persist even after discontinuation
a.) Pregnancy (teratogenic)
a.) Reduces Contraceptive effectiveness
This acne treatment is teratogenic