UWise - Objectives 35-39 Flashcards
(113 cards)
What is the most common cause of vaginal infection?
Bacterial vaginosis
What is the pathophysiology of BV?
A shift in the vaginal flora from hydrogen peroxide-producing lactobacilli to non-hydrogen peroxide-producing lactobacilli allows proliferation of anaerobic bacteria
How do patients with BV present?
The majority are asymptomatic; however, patients may experience a thin, gray discharge with a characteristic fishy odor that is often worse following menses and intercourse.
How is BV diagnosed with the Amsel criteria?
3 of the 4:
- Thin, gray homogenous vaginal discharge
- Positive whiff test (KOH leads to characteristic amine odor)
- Presence of clue cells on saline microscopy
- Elevated pH >4.5
How is BV treated?
- Metronidazole 500 mg orally BID for 7 days
2. Vaginal metronidazole 0.75% gel QHS for 5 days
Lichen sclerosus is a chronic inflammatory skin conditions that most commonly affects what populations?
Caucasian premenarchal girls and postmenopausal women
How do patients with lichen sclerosus present?
Extreme vulvar pruritis +/- vulvar burning, pain, and introital dyspareunia
How does early lichen sclerosus appear on physical exam?
Early skin changes include polygonal ivory papules involving the vulva and perianal areas, waxy sheen on the labia minora and clitoris, and hypopigmentation
The vagina is not involved.
How does lichen sclerosus appear on physical exam later in the disease?
More advanced skin changes may include fissures and erosions due to a chronic itch-scratch-itch cycle, mucosal edema, and surface vascular changes
Scarring with loss of normal architecture, such as introital stenosis and resorption of the clitoris (phimosis) and labia minora, may occur
How is lichen sclerosus treated?
High-potency topical steroids
What is the risk of developing squamous cell cancer within a field of lichen sclerosus?
<5%
How does squamous cell hyperplasia of the vulva appear?
Pink-red appearance with an overlying white keratin
How does lichen planus of the vulva appear?
Similar to lichen sclerosus, but typically has papules that have a dusky pink appearance and, in severe cases, can lead to erosions
How does vulvar cancer typically appear?
Friable growth or ulceration
How does vulvovaginal candidiasis present?
Pruritis and thick white cottage cheese-like discharge, vaginal soreness, vulvar burning, dyspareunia, external dysuria (none of these symptoms are specific)
How is vulvovaginal candidiasis diagnosed?
- Wet prep (saline or 10% KOH) or Gram stain of vaginal discharge demonstrates yeast or pseudohyphae (may be negative in up to 50% of cases)
- Vaginal culture or other test yields a positive result for yeast species
How is VC treated?
Short-course topical azole formulations (1-3 days), which results in relief of symptoms and negative cultures in 80-90% of patients who complete therapy.
Lichen planus is a chronic dermatologic disorder involving what parts of the body?
Hair-bearing skin and scalp, nails, oral mucous membranes, and vulva
What is the etiology and pathophysiology of lichen planus?
Etiology is unknown, but is thought to be related to cell-mediated immunity.
Inflammatory mucocutaneous eruptions characterized by remissions and flairs
How does lichen planus present?
Irritation, burning, pruritis, contact bleeding, pain, and dyspareunia of the vulva
How does lichen planus appear on physical exam?
Lacy, reticulated pattern of the labia and perineum, with or without scarring and erosions. With progressive adhesion formation and loss of normal architecture, the vagina can become obliterated. Patients may also experience oral lesions, alopecia, and extragenital rashes.
How is lichen planus treated?
No single agent is universally effective, so treatment consists of multiple supportive therapies and topical high potency corticosteroids
What is the classic appearance of lichen sclerosus?
Thinned out appearance with loss of normal architecture over time
How does genital psoriasis appear?
Scaly lesions that are well-dermacated