1 2 Toe Complete Cutaneous Syndactyly C4025140
A birth condition where the first two toes are connected by skin. This typically causes minimal functional problems and often requires no treatment.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Recurrent skin infection
Bacterial or fungal infections may develop in the webbed skin area.
Seek immediate care if signs of infection develop: increased redness, swelling, warmth, pus, or fever
Balance and stability problems
Severe cases may affect balance and increase risk of falls, especially on uneven surfaces.
If frequent falls occur or balance significantly impacts daily activities
Complete cutaneous webbing of first two toes
(musculoskeletal)The skin between the first and second toes is fully fused, creating a webbed appearance.
Frequency: 100% of patients (defining feature)
Toe immobility at webbed site
(musculoskeletal)The fused toes have limited independent movement due to the skin connection.
Frequency: 90-95% of patients
Abnormal gait pattern
(musculoskeletal)Walking pattern may be altered due to the fused toes affecting foot mechanics.
Frequency: 60-70% of patients
Skin irritation between fused toes
(dermatologic)Moisture and friction in the webbed area may cause skin irritation or breakdown.
Frequency: 50-60% of patients
Foot asymmetry
(musculoskeletal)The affected foot may appear different in shape or size compared to the unaffected foot.
Frequency: 25-35% of patients
Callus formation on fused toes
(dermatologic)Thickened skin may develop on the toe surfaces due to abnormal pressure from footwear.
Frequency: 20-30% of patients
Difficulty with footwear
(musculoskeletal)Finding comfortable shoes may be challenging due to the abnormal toe structure.
Frequency: 10-15% of patients
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy