What is the appropriate management for an 18‑year‑old female with recurrent bilateral periorbital swelling, recent use of fexofenadine and topical antihistamine/steroid eye drops, elevated liver enzymes (alkaline phosphatase 215 U/L, AST 190 U/L, ALT 171 U/L), and current medications fluoxetine and low‑dose Mili (0.25‑0.035 mg)?

Management of Recurrent Periorbital Swelling with Elevated Liver Enzymes

Immediately discontinue Mili (ethinyl estradiol-containing oral contraceptive) as it is the most likely cause of the hepatotoxicity, and consider discontinuing fluoxetine pending further evaluation. 1, 2

Immediate Actions

Discontinue Hepatotoxic Medications

• Stop Mili immediately: The FDA label explicitly warns that ethinyl estradiol-containing contraceptives like Mili must be discontinued if liver enzyme elevations develop, particularly with ALT/AST elevations of this magnitude (AST 190 U/L, ALT 171 U/L). 1

• Strongly consider stopping fluoxetine: Recent research demonstrates that fluoxetine significantly raises ALT and ALP in adolescents, with AST elevations occurring in both sexes. Given your patient's ALT 171 U/L, AST 190 U/L, and ALP 215 U/L, fluoxetine is a plausible contributor to hepatotoxicity. 2

• Discontinue topical steroid eye drops: While the periorbital swelling may be allergic in nature, prolonged periorbital steroid use carries risks of glaucoma and other ocular complications. The transient response (swelling resolved for one day then returned) suggests the underlying cause was not adequately addressed. 3, 4

Comprehensive Liver Evaluation

Obtain a core liver aetiology panel immediately to exclude other treatable causes of hepatotoxicity: 5

• Hepatitis B surface antigen (HBsAg)
• Hepatitis C antibody (with reflex PCR if positive)
• Hepatitis A IgM (given ALT >1000 threshold is not met, but still relevant in young patients)
• Hepatitis E serology
• Autoimmune markers: Anti-nuclear antibody (ANA), anti-smooth muscle antibody, immunoglobulin G levels
• Anti-mitochondrial antibody (for primary biliary cholangitis)
• Ferritin and transferrin saturation (for hemochromatosis)
• Ceruloplasmin and 24-hour urinary copper (Wilson's disease is critical to exclude in an 18-year-old with unexplained hepatitis)

Obtain right upper quadrant ultrasound to assess for: 5

• Bile duct dilation
• Hepatic steatosis
• Liver masses or adenomas (COCs increase risk of hepatic adenomas)

Clinical History Refinement

Specifically assess for drug-induced liver injury risk factors: 5

• Exact timing of when Mili and fluoxetine were started relative to symptom onset
• Any other medications, supplements, or herbal products
• Alcohol use (quantify in units per week)
• Body mass index and metabolic syndrome features
• Family history of liver disease, particularly Wilson's disease and hemochromatosis
• Recent viral illness or tick exposure

Management of Periorbital Swelling

Reassess the Allergic Conjunctivitis Diagnosis

• The recurrence after one day suggests the diagnosis may not be simple allergic conjunctivitis. Consider alternative diagnoses including angioedema (which can be drug-induced), thyroid eye disease, or systemic causes. 6

• Fexofenadine is safe to continue as it has an excellent safety profile with no hepatotoxicity and is not associated with adverse effects even at higher doses. The FDA label confirms no evidence of hepatic toxicity. 7, 8, 9

Appropriate Topical Therapy

• Switch to preservative-free artificial tears (refrigerated for comfort) as first-line therapy for symptomatic relief without risk of steroid complications. 6

• If allergic conjunctivitis is confirmed, use topical antihistamine/mast cell stabilizers (such as olopatadine or ketotifen) rather than steroids. These provide effective relief without the hepatic or ocular risks of corticosteroids. 6, 10

• Avoid chronic topical corticosteroids given the risks of glaucoma, cataract, and potential systemic absorption contributing to metabolic effects. 6, 3

Follow-Up and Monitoring

Repeat Liver Enzymes

• Recheck liver function tests in 1-2 weeks after discontinuing Mili and potentially fluoxetine. The British Society of Gastroenterology guidelines note that 84% of abnormal liver tests remain abnormal at 1 month, but drug-induced injury should show improvement with cessation. 5

• If liver enzymes do not improve or worsen, refer urgently to gastroenterology/hepatology for consideration of liver biopsy and advanced diagnostics. 5

Contraception Counseling

• Provide alternative non-hormonal contraception (copper IUD, barrier methods) or progestin-only methods that do not contain ethinyl estradiol, as the patient cannot resume combined oral contraceptives until liver function normalizes and causation is excluded. 1

Ophthalmology Referral

• If periorbital swelling persists despite conservative management, refer to ophthalmology to rule out orbital pathology, thyroid eye disease, or other structural causes. 6

Key Clinical Pitfalls

• Do not simply repeat the same liver panel without investigating etiology: The guidelines emphasize determining the cause rather than serial monitoring alone. 5

• Do not restart Mili without complete normalization of liver enzymes and exclusion of other causes: The FDA label is explicit that COC-related liver dysfunction necessitates discontinuation. 1

• Do not assume the periorbital swelling is purely allergic: The pattern of transient response followed by recurrence warrants broader differential consideration, particularly given the systemic findings of hepatotoxicity. 6

• Do not overlook Wilson's disease: This is a critical diagnosis to exclude in any adolescent or young adult with unexplained hepatitis, as delayed diagnosis leads to irreversible neurologic damage and death. 5