Dermatology Flashcards
What fungus causes Tinea Versicolor? What environmental condition causes increased growth of it?
Malessezia Globosa
– Grows more in the heat
How will the rash look with Tinea Versicolor?
Salmon patches that are Hypo OR Hyperpigmented
Where does the rash usually present with Tinea Versicolor and what does it look like?
Trunk and UE
= Salmon patches that are Hypo or Hyperpigmented
What will be seen on _____ with Tinea Versicolor?
KOH Prep
= Spaghetti and meatballs (hyphae and yeast)
What is the treatment for Tinea Versicolor?
Selenium Sulfide or Ketoconazole
5 P’s of Lichen Planus?
Pruritic
Purple/Pink
Polygonal
Papules
Plaques
5 P’s of Lichen Planus and what other markings may be present?
Pruritic
Purple/Pink
Polygonal
Papules
Plaques
– May see white lacy markings (wickham striae)
What 2 things is the development of Lichen Planus associated with and what is the treatment?
Hepatitis C and BP medications
–> Glucocorticoids
With what disease is Dermatitis Herpetiformis associated?
Celiac Disease
How does Dermatitis Herpetiformis present?
Vesicles/bullae on EXTENSOR surfaces
Describe how Pityriasis Rosea presents?
- Viral illness
- 1 large red lesion on trunk
- Outward spread of macules in christmas tree fashion
Describe how Pityriasis Rosea presents?
- Viral illness
- 1 large red lesion on trunk
- Outward spread of macules in christmas tress fashion
How does Erythema Nodosum present?
Tender and indurated nodules on the anterior shins
Where does Erythema Nodosum present?
Anterior shins
What causes Pemphigus Vulgaris?
Autoimmune attack against desmosomes in the intercellular layer of keratinocytes
Where is the autoimmune attack in keratinocytes with Pemphigus Vulgaris?
Desmosomes in the intercellular layer
How will Pemphigus Vulgaris present?
Huge blisters that rupture and ulcerate easily
What is the Nikolsky sign and with what condition is it present?
Pemphigus Vulgaris
= Mechanical pressure on normal skin at the edge of a blister induces another blister formation
What causes Bullous Pemphigoid?
Autoimmune attack against the basement membrane of keratinocytes
Where is the autoimmune attack in keratinocytes with Bullous Pemphigoid?
Basement membrane
What is Vitiligo?
Autoimmune attack against melanocytes
How will Vitiligo present?
Areas of depigmented skin
What are 3 types of Acne?
Comedonal
Inflammatory
Cystic
How will Comedonal Acne look?
Black heads and areas of rough skin with small bumps
Black heads and areas of rough skin with small bumps
Comedonal Acne
How will Inflammatory acne look?
Smaller papules with areas of redness
How will Cystic/Nodular acne look?
LARGE nodules with possible scarring