WGU D116 UNIT 8 PRACTICE GUIDE 2026 IMMUNOLOGY AND HOST DEFENSE SYSTEM FUNCTIONS

WGU D116 UNIT 8 PRACTICE GUIDE 2026
IMMUNOLOGY AND HOST DEFENSE
SYSTEM FUNCTIONS

◉ Rosacea S/Sx
Answer: Central facial flushing, persistent erythema, telangiectasis
(small blood vessels visible), papule, pustule without comedones


◉ Rosacea Tx
Answer: Trigger avoidance, Sunscreen, Topical metronidazole,
azelaic acid, ivermectin, Oral Doxy for moderate disease


◉ Perioral Dermatitis S/Sx
Answer: Small pustules and papule around mouth, Sometimes
around nose/eyes, Worse with topical steroids


◉ Perioral Dermatitis Tx
Answer: Stop steroid trigger, Topical metronidazole, Oral
tetracycline therapy if persistent


◉ Foliculitis S/Sx
Answer: Folicular pustules/papules, Often itchy, tender

, ◉ Foliculitis Tx
Answer: Hygiene, Topical abx, Antiseptic washes, Oral abx if
extensive


◉ Hyperhydrosis S/Sx
Answer: Excessive sweating


◉ Hyperhydrosis Tx
Answer: Topical aluminum chloride first line, Iotophoresis, Botox,
oral anticholinergics


◉ Hidradentitis Suppurativa S/Sx
Answer: Painful, recurrent nodules, abscesses, Draining sinus tracts,
Scaring in the axillae, groin, imflammatory folds


◉ Hidradentitis Suppurativa Tx
Answer: Weightloss, smoking cessation, Topical clindamycin (Mild),
Oral abx for flares, Biologic therapy for mod/sever, Surgery for
advanced disease


◉ Minor Burns S/Sx