# Boil and Furuncle - Category: infectious - Review status: reviewed (every claim checked against a document named on this page) - Sources: IDSA Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections 2014 · Egyptian National Drug Formulary - Antimicrobial 2023 · IDSA Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections, 2014 update · IDSA Clinical Practice Guidelines for the Treatment of MRSA Infections in Adults and Children, 2011 · Egyptian National Drug Formulary - Antimicrobial 2023 (mupirocin monograph) - Verified date: 2026-08 ## Verified against - IDSA Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections, 2014 update - Egyptian National Drug Formulary - Antimicrobial 2023 - IDSA Clinical Practice Guidelines for the Treatment of MRSA Infections in Adults and Children, 2011 ## Treatment metadata - Warm Compresses & Incision & Drainage (Primary Care Strategy) - Cefadroxil — 500 mg — oral.solid - Clindamycin — 300 mg — oral.solid - Mupirocin — topical ## Complete treatment card ```text BOIL AND FURUNCLE Sources: IDSA Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections 2014 · Egyptian National Drug Formulary - Antimicrobial 2023 · IDSA Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections, 2014 update · IDSA Clinical Practice Guidelines for the Treatment of MRSA Infections in Adults and Children, 2011 · Egyptian National Drug Formulary - Antimicrobial 2023 (mupirocin monograph) Review status: REVIEWED against 3 sources listed above (2026-08) IS IT THIS? - reference only, to read alongside your own examination SYMPTOMS - what the patient reports (4) - A slowly growing, tender lump that began as a small pustule becomes fluctuant over days to weeks [pustules · skin nodule] - Systemic features such as swollen regional nodes, fever, fatigue, or malaise can accompany it but are not required [fatigue · fever · malaise] - The ladder runs folliculitis first, then a furuncle if it is left untreated, and a carbuncle once several furuncles sit against each other [abscess] - A carbuncle is two or more furuncles running together [abscess] SIGNS - what you find (5) - A painful red nodule studded with several overlying pustules, which rupture easily and crust over [pustules] - Most often found on the neck nape, face, back, buttocks, axillae, or groin - It is an infection of the hair follicles that reaches into the surrounding skin and down into the deep subcutaneous tissue - The carbuncle is red, tender, inflamed and fluctuant, with several draining sinus tracts or pustules on its surface [abscess · pustules] - They favour thicker skin - the back of the neck, the back and the thighs - though they can appear anywhere hair grows TESTS (2) - Pus culture and sensitivity, taken before antibiotics start, guides therapy and screens for MRSA or gram-negative organisms - A complete blood count is checked when systemic symptoms exist, and HbA1c or fasting glucose if diabetes is suspected IF NOT THIS - what else fits (7) - Cystic acne runs smaller, usually with a single pustule or none at all - Hidradenitis suppurativa stays limited to the axilla or groin and follows a more chronic course - Cellulitis lacks pustules and does not form a discrete nodule - Osteomyelitis tends to sit over a joint and is excluded with MRI - Orf is a self-limited viral disease with six staged phases, seen in people handling sheep or farm animals - Cutaneous anthrax follows farm-animal or bioterrorism exposure and develops a black eschar - Arthropod bites tend to occur as multiple lesions and appear more acutely Source StatPearls "Carbuncle" - disease-level clinical article Status traced to the source above Rx: Main treatment | Topical antibiotic alongside drainage MAIN TREATMENT - choose one 1. WARM COMPRESSES & INCISION & DRAINAGE (PRIMARY CARE STRATEGY)[1st line] Adult Apply warm moist compresses for 15-20 minutes 3-4 times daily to promote spontaneous drainage for small uncomplicated furuncles (< 2 cm). Perform surgical incision and drainage for fluctuant, painful, or larger abscesses. Systemic antibiotics are NOT required for simple localized drained boils without cellulitis. x 5-7 days PRN Peds Warm compresses and drainage for small boils in children; assess for surrounding erythema or systemic features. Source IDSA Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections, 2014 update Why Incision and drainage is the primary and definitive treatment for fluctuating furuncles; systemic antibiotics provide no added benefit for small, uncomplicated drained lesions without surrounding cellulitis or systemic symptoms. Caution Incision and drainage is the primary definitive treatment for fluctuant boils. Indicate systemic antibiotics if surrounding cellulitis (> 2 cm), systemic signs (fever, tachycardia), facial location (risk of cavernous sinus thrombosis), immunosuppression, or severe diabetes are present. Never squeeze or compress facial boils in the nasolabial triangle ('danger triangle of the face'). The compress routine and the 2 cm threshold are ordinary practice, not guideline text - IDSA gives neither. What IDSA does say is that incision and drainage is the treatment for a carbuncle, an abscess or a large furuncle, and that whether to add an antibiotic turns on systemic inflammatory response. 2. CEFADROXIL [2nd line] Adult 1 g daily, as a single dose or in 2 divided doses, for 7 days for boils with surrounding cellulitis, systemic symptoms, or high-risk locations x 7 days Peds 30 mg/kg/day [child max 1000 mg] (30 mg/kg/day in 2 divided doses for 7 days.) 3kg -> 90 mg/day 4kg -> 120 mg/day 5kg -> 150 mg/day 6kg -> 180 mg/day 7kg -> 210 mg/day 8kg -> 240 mg/day 9kg -> 270 mg/day 10kg -> 300 mg/day 11kg -> 330 mg/day 12kg -> 360 mg/day 13kg -> 390 mg/day 14kg -> 420 mg/day 15kg -> 450 mg/day 16kg -> 480 mg/day 17kg -> 510 mg/day 18kg -> 540 mg/day 19kg -> 570 mg/day 20kg -> 600 mg/day 21kg -> 630 mg/day 22kg -> 660 mg/day 23kg -> 690 mg/day 24kg -> 720 mg/day 25kg -> 750 mg/day 26kg -> 780 mg/day 27kg -> 810 mg/day 28kg -> 840 mg/day 29kg -> 870 mg/day 30kg -> 900 mg/day 31kg -> 930 mg/day 32kg -> 960 mg/day 33kg -> 990 mg/day 34kg -> 1000 mg/day (capped) 35kg -> 1000 mg/day (capped) 36kg -> 1000 mg/day (capped) 37kg -> 1000 mg/day (capped) 38kg -> 1000 mg/day (capped) 39kg -> 1000 mg/day (capped) 40kg -> 1000 mg/day (capped) 41kg -> 1000 mg/day (capped) 42kg -> 1000 mg/day (capped) 43kg -> 1000 mg/day (capped) 44kg -> 1000 mg/day (capped) 45kg -> 1000 mg/day (capped) 46kg -> 1000 mg/day (capped) 47kg -> 1000 mg/day (capped) 48kg -> 1000 mg/day (capped) 49kg -> 1000 mg/day (capped) 50kg -> 1000 mg/day (capped) Choice Alternatives. The entry's rationale names cefadroxil the first-line systemic agent; clindamycin is the oral alternative when a cephalosporin cannot be used. Cefadroxil is also far cheaper. Source Egyptian National Drug Formulary - Antimicrobial 2023 Why First-generation oral cephalosporin with reliable anti-staphylococcal activity, used as first-line systemic therapy when a boil has surrounding cellulitis, systemic symptoms, or is in a high-risk location; cheap and widely stocked in Egypt. Caution 1 g a day is the whole skin dose. 500 mg twice daily reaches it; 1 g twice daily is double it and is the urinary-tract figure, not the skin one. First-line oral anti-staphylococcal systemic antibiotic for complicated furuncles/carbuncles in Egyptian primary care. Take with or without food; maintain consistent dosing intervals. Use with caution in patients with penicillin allergy (1-10% cross-reactivity risk for 1st gen cephalosporins). Egypt MEGADROXIL 500 MG 8 CAPS. SHIFA MEDICAL... 4.50 EGP (0.56/unit) CEFADROXIL 500MG 8 CAPS. SIGMA 7.50 EGP (0.94/unit) DURABIOTIC 500MG 8 CAPS. LOGESTIC PHAR... 9.00 EGP (1.12/unit) BIODROXIL 500MG 8 CAPS. KAHIRA > NOVA... 10.50 EGP (1.31/unit) LONGICEF 500 MG 8 CAPS. KAHIRA 15.00 EGP (1.88/unit) CURISAFE 500MG 8 CAPS. PHARCO B 45.00 EGP (5.62/unit) DURICEF 500MG 12 CAPS. SMITHKLINE BE... 72.00 EGP (6.00/unit) LONGICEF 125MG/5ML SUSP. 60 ML KAHIRA 4.25 EGP -> ? strength differs, ? different route - not oral solid CEFADROXIL 250MG/5ML PD. FOR ORAL SUSP. 60ML SIGMA 7.50 EGP -> ? strength differs, ? different route - not oral solid 3. CLINDAMYCIN [2nd line] Adult 300 mg to 450 mg orally three times daily for 7 days for penicillin/cephalosporin- allergic patients or suspected MRSA x 7 days Peds 10-25 mg/kg/day [child max 1350 mg] (10-25 mg/kg/day in 3-4 divided doses for 7 days.) 3kg -> 30-75 mg/day 4kg -> 40-100 mg/day 5kg -> 50-125 mg/day 6kg -> 60-150 mg/day 7kg -> 70-175 mg/day 8kg -> 80-200 mg/day 9kg -> 90-225 mg/day 10kg -> 100-250 mg/day 11kg -> 110-275 mg/day 12kg -> 120-300 mg/day 13kg -> 130-325 mg/day 14kg -> 140-350 mg/day 15kg -> 150-375 mg/day 16kg -> 160-400 mg/day 17kg -> 170-425 mg/day 18kg -> 180-450 mg/day 19kg -> 190-475 mg/day 20kg -> 200-500 mg/day 21kg -> 210-525 mg/day 22kg -> 220-550 mg/day 23kg -> 230-575 mg/day 24kg -> 240-600 mg/day 25kg -> 250-625 mg/day 26kg -> 260-650 mg/day 27kg -> 270-675 mg/day 28kg -> 280-700 mg/day 29kg -> 290-725 mg/day 30kg -> 300-750 mg/day 31kg -> 310-775 mg/day 32kg -> 320-800 mg/day 33kg -> 330-825 mg/day 34kg -> 340-850 mg/day 35kg -> 350-875 mg/day 36kg -> 360-900 mg/day 37kg -> 370-925 mg/day 38kg -> 380-950 mg/day 39kg -> 390-975 mg/day 40kg -> 400-1000 mg/day 41kg -> 410-1025 mg/day 42kg -> 420-1050 mg/day 43kg -> 430-1075 mg/day 44kg -> 440-1100 mg/day 45kg -> 450-1125 mg/day 46kg -> 460-1150 mg/day 47kg -> 470-1175 mg/day 48kg -> 480-1200 mg/day 49kg -> 490-1225 mg/day 50kg -> 500-1250 mg/day Source IDSA Clinical Practice Guidelines for the Treatment of MRSA Infections in Adults and Children, 2011 Why Lincosamide antibiotic with anti-staphylococcal and anti-MRSA activity, used as the oral alternative to cefadroxil for boils in patients with penicillin or cephalosporin allergy or when community-acquired MRSA is suspected. Caution Oral option for patients with severe penicillin allergy or suspected community-acquired MRSA. Discontinue immediately if severe or persistent diarrhea occurs due to risk of Clostridioides difficile-associated colitis. The paediatric band here is the ordinary skin-infection dose. If MRSA is the reason clindamycin was chosen, IDSA gives children 10-13 mg/kg per dose every 6-8 hours - roughly 30-40 mg/kg/day, well above the low end of this band. Egypt ADCOCLINDACE 300 MG 16 CAPS. ARAB DRUG COM... 24.00 EGP (1.50/unit) CLINACYN 300MG 16 CAPS. SIGMA > EGYPT... 31.50 EGP (1.97/unit) CLINDAM 300 MG 16 CAPS. SIGMA > OCTOB... 75.00 EGP (4.69/unit) MEPACLIND 300MG 8 CAPS. MEPACO 38.00 EGP (4.75/unit) CLINDACINE ART 300 MG 12 CAPS. RAMEDA > ART ... 76.00 EGP (6.33/unit) ALFACLINDAMYCIN 300 MG 10 CAPS. ATCO PHARMA >... 69.00 EGP (6.90/unit) DALACIN C 300MG 10 CAPS. PFIZER 114.00 EGP (11.40/unit) KLENDABIOTICAM 1 % TOP. SOLUTION PANAX PHARMA 8.50 EGP -> ? strength differs, ? different route - not oral solid ADCOCLINDACE 10MG/ML TOP. SOL. ARAB DRUG COM... 12.00 EGP -> ? strength differs, ? different route - not oral solid TOPICAL ANTIBIOTIC ALONGSIDE DRAINAGE - give alongside 4. MUPIROCIN [add-on - not a substitute] Adult Apply the 2% ointment or cream to the affected area 2 to 3 times daily. x 7 to 14 days, depending on severity and response; reassess if no better after 3 to 5 days Peds Infants, children and adolescents: apply a small amount three times daily for 5 to 10 days, and review the child if there is no improvement by day 5. Source Egyptian National Drug Formulary - Antimicrobial 2023 (mupirocin monograph) - verbatim: "Apply to affected area 2 to 3 times daily, typically for 7 to 14 days depending on severity and clinical response; if no response after 3 to 5 days, re-evaluate treatment." Why Drainage stays the main treatment, but the article lists a topical antibiotic as an add- on. The article also describes mupirocin for clearing nasal staphylococcal carriage in the patient whose boils keep recurring. Caution For external use only - keep it off the eyes and off mucous membranes, because the base can be absorbed and cause drying and irritation. Stop it if the skin becomes irritated or sensitised, or if a systemic allergic reaction develops. Do not use it for weeks on end: prolonged use encourages fungal or resistant bacterial overgrowth. It does not replace incision and drainage - a fluctuant boil still needs draining. Egypt BACTROFORM 2% TOP. OINT. 15 GM WESTERN PHARM... 35.00 EGP MUPIROCIN SAJA 2% TOP. OINT. 15 GM BIOPHARM EGYPT > SAJA PHARMA 35.00 EGP MUPIRAX 2% OINT. 10 GM GLOBAL NAPI P... 48.00 EGP MUPIROCIN SAJA 2% TOP. OINT. 20 GM BIOPHARM EGYPT > SAJA PHARMA 83.00 EGP MUPIRAX 2% OINT. 30 GM GLOBAL NAPI P... 118.00 EGP Prices are indicative (dataset snapshot 2026-06); verify with the pharmacy. ``` --- Dawaa Reference is a reference for prescribers, not a medical device, and does not replace clinical judgement. [Privacy policy](/privacy)