This is an observational study collecting patient/caregiver reports on suspected medication/drug-induced acute porphyria attacks, as well as safe use of drugs previously labeled "unsafe" or with unknown risk. Participants will be recruited through the RDCRN Contact Registry for the Porphyrias Consortium. The study will be advertised on the Consortium website and through the American Porphyria Foundation's social media network.
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Acute Attack Form
Timeframe: 5 years from study start
Uneventful Use of Possible Risky Medication Form
Timeframe: 5 years from study start
Use of Medications of Interest Form
Timeframe: 5 years from study start