| Condition | Characteristics |
|---|---|
| Pompholyx | Painful pruritus with vesicles on palms and sides of fingers |
| Herpes zoster | Vesicles along a dermatomal distribution |
| Herpetic whitlow | Painful, coalescing vesicles with surrounding erythema on fingers |
| Endocarditis with Osler’s nodes | Painful, swollen, violaceous nodules in the pulp of fingers and toes |
| Paronychia | Pain, erythema, and swelling of the posterior or lateral nail folds |