Methanol poisoning is classically associated with which finding?

Methanol poisoning is classically associated with which finding?

• A. Visual disturbances
• B. Hypertension
• C. Abdominal pain
• D. Hypoglycemia

Answer: (A)

Methanol poisoning is classically linked to visual disturbances because its toxic metabolite, formic acid, injures the optic nerve and retina. After methanol is ingested, it’s metabolized to formaldehyde and then formic acid, which disrupts mitochondrial function in retinal cells. This leads to blurred or diminished vision, color vision problems, and can progress to irreversible blindness. While other symptoms like abdominal pain, high blood pressure, or low blood sugar can occur in various conditions, they are not characteristic features of methanol toxicity. The visual impairment is the hallmark clue, often accompanied by a high anion gap metabolic acidosis with an elevated osmolar gap.

Methanol poisoning is classically linked to visual disturbances because its toxic metabolite, formic acid, injures the optic nerve and retina. After methanol is ingested, it’s metabolized to formaldehyde and then formic acid, which disrupts mitochondrial function in retinal cells. This leads to blurred or diminished vision, color vision problems, and can progress to irreversible blindness. While other symptoms like abdominal pain, high blood pressure, or low blood sugar can occur in various conditions, they are not characteristic features of methanol toxicity. The visual impairment is the hallmark clue, often accompanied by a high anion gap metabolic acidosis with an elevated osmolar gap.