Paronychia Management

Assessment and Classification

The severity of paronychia should be evaluated based on parameters including redness, edema, discharge, and granulation tissue, as recommended by the American College of Physicians, via the Annals of Oncology 2, 3
The presence of pus or abscess formation requires immediate drainage, according to the American Academy of Dermatology, via the Annals of Oncology and Praxis Medical Insights 3
Assessing for predisposing factors such as ingrown toenail is crucial for specific management, as suggested by the American Podiatric Medical Association, via Praxis Medical Insights 3
The blackening may represent subungual hematoma or necrotic tissue that needs drainage, as indicated by the American College of Surgeons, via the Annals of Oncology 4, 5

Drainage is the primary and most important intervention for paronychia with pain and blackening, as stated by the Infectious Diseases Society of America, via Clinical Infectious Diseases 1
Topical povidone iodine 2% should be applied twice daily to the affected area, as recommended by the American Academy of Dermatology, via the Annals of Oncology and Praxis Medical Insights 2, 3
Mid to high potency topical steroid ointment should be used to nail folds twice daily to reduce inflammation, as suggested by the National Institute of Health, via Praxis Medical Insights 3

For Grade 1 paronychia, continue with topical treatments and keep the area dry and clean, as recommended by the American College of Physicians, via the Annals of Oncology 2, 3
For Grade 2 paronychia, consider adding oral antibiotics if there is evidence of spreading infection, as suggested by the American Academy of Dermatology, via the Annals of Oncology 2
For Grade 3 or intolerable Grade 2 paronychia, interrupt any causative medications, obtain cultures, and consider partial nail avulsion, as recommended by the American College of Surgeons, via the Annals of Oncology and Praxis Medical Insights 2, 6

Gentle nail care, including trimming nails straight across and not too short, can help prevent recurrence, as recommended by the American Academy of Dermatology, via the Annals of Oncology and Praxis Medical Insights 2, 3
Avoiding repeated friction, trauma, and excessive pressure can also help prevent recurrence, as suggested by the National Institute of Health, via Praxis Medical Insights 3

Secondary bacterial or mycological superinfections are present in up to 25% of paronychia cases, which may explain the blackening, as indicated by the American College of Physicians, via the Annals of Oncology and Praxis Medical Insights 2, 3
Both gram-positive and gram-negative organisms can be implicated in paronychia, as stated by the Infectious Diseases Society of America, via the Annals of Oncology 2

Reassess after 2 weeks of treatment, and if no improvement is seen or worsening occurs, obtain cultures and consider changing antimicrobial therapy or surgical intervention, as recommended by the American Academy of Dermatology, via Praxis Medical Insights and the Annals of Oncology 2, 3, 6