How to treat severe diaper rash on a two-week-old baby, and whether or not to use purple ointment

Patient's question:

Sure, here is the translation of the content you provided:
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No
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Doctor's answer:

Disease Analysis: It is likely to be a possibility of diaper rash. You can apply calamine lotion externally for treatment. Maintain dryness.
Advice: It is recommended that you adjust your diet. You can consume more vegetables and fruits, and drink more water.