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Understanding Metallic Taste in Mouth: Causes & Solutions
Dysgeusia (metallic taste) has diverse etiologies:
- Oral: Gingivitis, periodontitis, apical abscess, amalgam fillings (galvanic current).
- Medications: Antibiotics (metronidazole, clarithromycin), ACE inhibitors, lithium, chemotherapy, metformin, antihistamines.
- Systemic: Pregnancy (1st trimester), diabetes (ketosis), CKD (uremia), GERD, zinc deficiency, B12 deficiency.
- Neurologic: Bell's palsy, TBI, MS, temporal lobe epilepsy.
- Infections: URI, COVID-19, sinusitis.
- Environmental: Metal fumes, lead/copper exposure.
Approach
- Review medications (adjust if possible).
- Oral hygiene, dental exam.
- Lab work: Glucose, renal, zinc, B12.
- Treat underlying condition.
- Symptomatic: Plastic utensils, citrus marinades, good hydration.
Persistent >2 weeks → physician evaluation.
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