Differential Diagnosis for BL Foot Dermatitis

Single most likely diagnosis

• Contact Dermatitis: This is the most likely diagnosis given the symptoms of dermatitis, erythema, vesicles, itching, and burning on the foot. Contact dermatitis occurs when the skin comes into contact with an irritant or allergen, leading to an immune response and subsequent inflammation.

Other Likely diagnoses

• Atopic Dermatitis (Eczema): This condition is characterized by itchy, inflamed skin and can present with vesicles. It's a common condition that can affect any part of the body, including the feet.
• Dyshidrotic Eczema: A type of eczema that specifically affects the hands and feet, characterized by small, itchy blisters or vesicles.
• Tinea Pedis (Athlete's Foot): A fungal infection of the foot that can cause itching, burning, and dermatitis. It often presents with erythema and can have vesicles in severe cases.

Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)

• Cellulitis: A bacterial infection of the skin and subcutaneous tissues that can present with erythema, warmth, and swelling. It requires prompt antibiotic treatment to prevent serious complications.
• Deep Vein Thrombosis (DVT): Although less common, DVT can present with swelling, erythema, and warmth of the affected limb. It's a medical emergency that requires immediate anticoagulation to prevent pulmonary embolism.

Rare diagnoses

• Pompholyx: A rare condition characterized by the sudden onset of vesicles on the palms or soles, often accompanied by itching and burning.
• Erythema Multiforme: A skin condition characterized by target-like lesions, which can sometimes present with vesicles and itching. It can be triggered by infections or medications.
• Keratoderma Blennorrhagicum: A rare skin condition associated with Reiter's syndrome, characterized by vesicles and erythema on the soles of the feet.