Guideline Summary: Management of Acute and Chronic Paronychia

Acute Paronychia Management

Antiseptic soaks – Use warm water or a 1:1 white‑vinegar‑to‑water solution 3–4 times daily for ≈15 minutes. 1
Topical povidone‑iodine – Apply 2 % povidone‑iodine to the affected peri‑ungual area twice daily. 1
Topical corticosteroid – Apply a mid‑ to high‑potency corticosteroid ointment to the nail folds twice daily to reduce inflammation. 1
Indication for oral antibiotics – Initiate systemic therapy when clinical signs of infection are present (increased warmth, purulence, spreading erythema, or systemic symptoms). 1
First‑line oral agent – Cephalexin is the preferred initial antibiotic. 1
Second‑line oral agent – Amoxicillin‑clavulanate 500/125 mg every 12 hours provides broader coverage. 1
Alternative after cephalexin failure – Switch to sulfamethoxazole‑trimethoprim for broader coverage, including MRSA. 1
Avoid clindamycin – It lacks adequate streptococcal coverage and resistance rates are rising. 1
Surgical drainage – Any abscess formation mandates incision and drainage, irrespective of other treatments. 1
Microbiologic assessment – Obtain bacterial (and fungal, when indicated) cultures before starting antibiotics in severe or refractory cases; secondary super‑infection occurs in ≈25 % of cases. 1
Culture‑directed therapy – Swab pus for culture and tailor antimicrobial therapy according to results. 1

Pathophysiology – Chronic paronychia is primarily an irritant contact dermatitis caused by disruption of the cuticle barrier, not a primary infection. 3
At‑risk populations – Frequently seen in individuals with wet occupations (e.g., housekeeping, dishwashing, bartending, floristry, baking, swimming) and in children who habitually suck their thumbs. 3
Microbial role – Bacterial and yeast organisms act as secondary colonizers rather than primary pathogens. 3
Topical corticosteroid therapy – High‑potency topical corticosteroids, alone or combined with a topical antibiotic, are the mainstay of treatment. 2
Dryness is essential – Keeping the affected area dry is the most important intervention for candidal paronychia. 1
Emollient use – Apply emollients regularly to the cuticles and peri‑ungual skin to restore barrier function. 2

Pyogenic granuloma – Manage with scoop‑shave removal using hyfrecation or silver nitrate application. 2
Advanced paronychia (grade 2–3) – Partial nail‑plate avulsion may be required for intolerable disease. 1
Intralesional steroid – Consider intralesional triamcinolone acetonide for recurrent or treatment‑refractory lesions. 2
Topical timolol – Timolol 0.5 % gel applied twice daily under occlusion for one month has achieved complete clearance of peri‑ungual pyogenic granulomas in reported cases. 1

Early reassessment – Re‑evaluate the patient after 2 weeks of therapy. 1
Escalation criteria – If no clinical improvement at 2 weeks, intensify treatment or refer to dermatology/podiatry. 1

Nail‑care habits – Advise patients to avoid nail biting or trimming nails excessively short. 1
Proper trimming – Trim nails straight across and keep them of adequate length. 1
Routine emollient application – Use topical moisturizers daily on cuticles and peri‑ungual tissues. 1
Protective gloves – Wear gloves during cleaning or any activity involving prolonged water or chemical exposure. 1
Footwear hygiene – For toenail involvement, wear comfortable, well‑fitting shoes and cotton socks. 1