Rx for angular stomatitis

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Angular Stomatitis (Angular Cheilitis / Perleche) - Treatment

Definition

Moist, infected reddish-brown fissures at the angles (corners) of the mouth, often with macerated erythematous patches, erosions, and soreness. Saliva leaks at the corners, creating a chronically wet intertriginous environment.

Step 1: Treat the Underlying Cause

Treatment must target the root cause. Common causes and their management:

Cause	Specific Treatment
Candida (most common)	Topical antifungal (see below)
Staphylococcus aureus coinfection	Mupirocin ointment topically
Riboflavin (B2) deficiency	Riboflavin supplementation
Iron deficiency	Oral iron supplementation
B6, B12, folate deficiency	Replace the deficient nutrient
Zinc deficiency	Zinc supplementation
Ill-fitting dentures / reduced vertical dimension	Improve denture fit, replace missing teeth, increase denture height
Xerostomia (Sjogren's, drugs)	Treat dry mouth, manage underlying disease
Atopic dermatitis, oral habits (lip licking)	Emollients, behavior modification

Step 2: Topical / Local Treatment

First-line (candidal angular cheilitis):

Clotrimazole 0.75% cream applied to the angles - usually the go-to topical agent
Nystatin ointment - effective, especially combined with corticosteroid (see below)
Nystatin + iodochlorhydroxyquin in hydrocortisone ointment - useful when anatomical factors (dentures, drooling) contribute; addresses both infection and inflammation

If Staphylococcus aureus is identified:

Mupirocin ointment topically

Stubborn/resistant cases:

Low-potency corticosteroid (e.g., desonide) combined with a topical anticandidal agent
Stronger corticosteroids can be used short-term for persistent inflammatory component

Step 3: Systemic Treatment (when indicated)

If angular cheilitis is associated with intraoral or oral candidiasis:

Fluconazole - 200 mg loading dose on Day 1, then 100 mg daily for 2 weeks - is the drug of choice for oral/intraoral candidiasis
In patients with severe salivary hypofunction, systemic fluconazole may be less effective; use topical nystatin or miconazole tablets instead

Important: Treat intraoral candidiasis concurrently when angular cheilitis has a candidal cause, as topical treatment of the angles alone may not suffice. - Goldman-Cecil Medicine, p. 4155

Step 4: Structural / Surgical Options

Injection of collagen or insertion of soft implants to obliterate deep angular creases (for anatomically predisposed patients)
Excision + rotating flap graft - reserved for truly resistant cases only

Summary Algorithm

Angular Stomatitis
       |
       ├── Nutritional deficiency? → Replace (B2, B12, B6, iron, zinc, folate)
       |
       ├── Candida (most common) → Clotrimazole cream / Nystatin ointment
       |       + Intraoral candidiasis? → Add fluconazole systemic
       |
       ├── S. aureus coinfection → Mupirocin ointment
       |
       ├── Denture-related / reduced vertical dim → Fix denture + topical Rx
       |
       └── Resistant → Low-potency steroid + anticandidal / referral

Sources:

Andrews' Diseases of the Skin, p. 918 (Angular Cheilitis section)
Goldman-Cecil Medicine, p. 4155 (Angular Cheilitis section)
Sleisenger & Fordtran's GI and Liver Disease, p. 371 (Cheilitis)
S Das Manual on Clinical Surgery, 13th ed., p. 1424

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