CH 39 Benign Disorders of the Vulva and Vagina Flashcards
Lichen Sclerosus, what is it
a benign, chronic inflammatory process; the most common vulvar dermatological disorder
Possible causes of lichen sclerosus
vitamin A deficiency, autoimmune process, excess of enzyme elastase, decreased activity of 5 alpha reductase enzyme, which prevents conversion of testosterone to dihydrotestosterone and results in thinning of skin
Signs and symptoms of lichen sclerosus
usually happens over 60 years old, pruritus, pain, dyspareunia, white lesions
Progression of acute lichen sclerosus
- erythema and edema of vulvar skin 2. development of white plaques 3. uniting of white plaques 4. intense pruritus leading to scratch itch cycle 5. telangiectasis and subepithelial hemorrhage resulting from scratching 6. Erosions, fissures, ulcerations
Progression of chronic lichen sclerosus
- thin wrinkled and white skin with cigarette paper look, 2. agglutination of anterior parts of labia minora of both sides to cover clitoris and create phimosis, 3. contraction of vulvar structures with resultant introital stenosis (kraurosis), 4. involvement of the perianal region in the form of 8 around vulva and anus, 5. Devlopment in some women of islands of hyperplastic epithelia within atrophic lichen aclerosus epithelium
Diagnosis of lichen sclerosus
need 5 features in biopsy: 1. thin hyperkeratotic layer, 2. thinning of epithelial layer, 3. flattening of papillae, 4, Homogenization of the stroma, 5. Deep lymphocytic infiltration
Differential diagnosis of lichen sclerosus
vitiligo, lichen simplex chronicus, psoriasis
Complications of lichen sclerosus
high rate of squamous cell cancer in women with lichen sclerosus. Clobetasole is an effective tx
Lichen sclerosus treatment (none medical)
stop itch scratch cycle, minimize dermal inflammation, avoid tight underwear, cleanse with mild soap, dry vulvar skin with hair dryer
Medication for lichen sclerosus
oral antihistamine at bedtime. Give clobetasole diproprionate (dernovate) is a topical steroid that should be given at the beginning to obtain immediate relief of itching. If ineffective try tacrolimus cream, retinoid, antimlarial agents, photodynamic therapy. Only do surgery to prevent cancer
Herpes genitalis pathogenesis
infection occurs through intimate contact, mainly sex. Virus contaminates secretions and mucosal surfaces. The resulting erosion in skin allows port of entry for other STDs. There are periods of viral shedding without symptoms.
Signs and symptoms of herpes genitalis
tingling, burning, itching, flu like symptoms, right before presence of painful vesicular eruptions surrounded by red halos appearing in serpentine like fashion around vulva. may have urinary symptoms
Diagnosis of herpes genitalis
virus culture on fibroblast. Take specimen from vesicle fluid or scraping from erosion. polymerase chain reaction test may indicate previous outbreak rather than current one. Can use smear from Pap but is less sensitive. Cytologic characteristics: giant cells, multiple nuclei, molding of nuclei, ground glass appearance
Complications of herpes genitalis
stigmatization, apprehension of recurrent outbreaks
Neonatal herpes
associated with 60% mortality rate, half of survivors have neuro/ocular sequelae, Ask pregant women if they’ve ever had outbreaks