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Neurology · Infectious Disease

FACE DROPS calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Fever
Aches

Arthralgia or myalgia. Present scores 6.

Headache
Unusual fatigue
Dermatomal or radicular pattern

Transverse myelitis or radiculitis. Present scores 4.

Otalgia or postauricular pain
Stiff neck

Result

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Clinical inputs

  • Fever
  • Aches
  • Headache
  • Unusual fatigue
  • Dermatomal or radicular pattern
  • Otalgia or postauricular pain
  • Stiff neck

Primary source

McEntire CRS et al. FACE DROPS: A Clinical Risk Assessment Tool for Differentiation of Acute Lyme Disease-Associated Facial Palsy From Bell Palsy. Neurol Clin Pract. DOI: 10.1212/CPJ.0000000000200476. PMID: 40290705. The results list fever +8, aches (arthralgia or myalgia) +6, cephalalgia (headache) +3, exhaustion (unusual fatigue) +4, dermatomal or radicular pattern (transverse myelitis or radiculitis) +4, otalgia or postauricular pain −1, and stiff neck (nuchal rigidity) +3. Scores of 4 or lower predicted Bell palsy with at least 93.5% accuracy. Scores of 7 or higher predicted Lyme disease-associated facial palsy with at least 96.0% accuracy. (2025)

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