All are true of pellagra EXCEPT:

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The question asks to identify the statement that is NOT true about pellagra (EXCEPT). 
Option 1: 'Involves diarrhea and dementia' — This is true. Pellagra classically presents with the 3 D's: dermatitis, diarrhea, and dementia (and can progress to death if untreated). The presence of diarrhea and cognitive changes aligns with classic symptoms. 
Option 2: 'Is cured by vitamin B6 supplements' — This is false. Pellagra is due to niacin (vitamin B3) deficiency, or sometimes tryptophan deficiency; treatment relies on niacin (nicotinic acid) supplementation and addressing tryptophan intake. B6 is not the standard cure for pellagra, so this statement is incorrect. 
Option 3: 'Sunlight worsens the condition' — This is true. Pellagra dermatitis is photosensitive, and exposure to sunlight typically aggravates the skin lesions, leading to a characteristic rash in sun-exposed areas. 
Option 4: 'Skin becomes inflamed and scaly' — This is true. Dermatitis with dry, inflamed, scaly skin in sun-exposed regions is a hallmark of pellagra. 
In summary, options 1, 3, and 4 describe correct aspects of pellagra, while option 2 incorrectly states a cure with vitamin B6, making it the EXCEPT statement.

FOOD20003_2025_SM1 End of Semester PRACTICE Exam- Requires Respondus LockDown Browser

All are true of pellagra EXCEPT:

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