Pharm

Drug-induced Lupus

search

Drug-induced Lupus, Drug Induced Lupus, Systemic Lupus Secondary to Medication, Medication Causes of Systemic Lupus Erythematosus, Lupus-Like Syndrome

  • Causes
  1. More than 80 drugs associated (first described in 1945 related to sulfadiazine)
  2. Hydralazine (most common cause)
  3. Procainamide
  4. Isoniazid
  5. Minocycline
  6. Terbinafine
  7. Phenytoin (Dilantin)
  8. Ethosuximide
  9. D-Penicillamine
  10. Proton Pump Inhibitors
  11. Beta Blockers
  • Symptoms (following causative medication use)
  1. See Systemic Lupus Erythematosus
  2. Arthralgias
  3. Rash
  4. Serositis
  5. Hematologic abnormalities
  • Labs
  1. Screening indicated for causative medication use and symptoms suggestive of SLE (see above)
    1. ANA Titer
  2. Confirmatory testing if positive ANA titer
    1. Antihistone Antibody
      1. Test Sensitivity in Drug Induced Lupus: 95%
      2. Test Specificity in Drug Induced Lupus: >90%
  • Prognosis
  1. Symptoms often recede with stopping causative agent
  2. Rarely life threatening