From the Research
For managing fingernail changes after hand, foot, and mouth disease (HFMD), the primary recommendation is watchful waiting as these changes typically resolve on their own without specific treatment. Parents and patients should understand that nail shedding or Beau's lines (horizontal ridges) are common after HFMD and represent a delayed reaction to the viral infection, occurring 3-8 weeks after the initial symptoms 1. No medications or topical treatments are necessary for these nail changes. Key points to consider include:
- Keeping the affected nails clean and trimmed to prevent snagging
- Avoiding picking at loose nails to prevent infection
- Applying moisturizer to the nail beds can help with comfort if there is any dryness These nail abnormalities are temporary, with complete regrowth of normal nails typically occurring within 1-3 months 1. The nail changes happen because the virus temporarily disrupts nail matrix growth during the acute infection phase, but this disruption is not permanent and does not indicate ongoing infection. If signs of secondary bacterial infection develop (increasing pain, swelling, warmth, or discharge), medical attention should be sought promptly. The most recent and highest quality study supports this approach, emphasizing the importance of watchful waiting and supportive care 1.