PCD is best diagnosed with contrast venography, but venous duplex ultrasonography is used more commonly in clinical practice. Magnetic resonance and computed tomography venography can also be used. Differential Diagnosis DDx is as follows: * Cellulitis * Venous insufficiency * Superficial thrombophlebitis * DVT * Arterial embolism * Lymphedema
Phlegmasia cerulea dolens
Phlegmasia alba dolens
Mania errabunda
Piedraia hortae
Sclerema neonatorum
Antihecticum poterii
Haycocknema perplexum
Acne aestivalis