What are some signs and symptoms of pellagra?

Pellagra is characterised by the 4 Ds:

  • Diarrhoea
  • Dermatitis (this can be exacerbated by sunlight)
  • Dementia
  • Death (this can happen within 4 or 5 years)

There may be other symptoms, such as muscle weakness, tongue swelling, nausea and vomiting, and heart problems as well. People with pellagra may be annoyed by bright lights too.

Photosensitivity Guide Index:

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