While traveling in
New Zealand several months ago, I had a metallic
taste in my mouth. My tongue was black, I was nauseous, had diarrhea, and stomach pains. All symptoms subsided within a few days. However, I just suffered a recurrence. I was on a cruise ship for a few days a week ago, in the Bahamas, but felt fine during that time, and for the week that I am home. What could be the cause of this? I am particularly perplexed by the black tongue.
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