Podophyllin is characterized by inflammation of the laminated portion of the reticular tissue of the horse's foot. Depending on its stage Podophyllin subsides or cause laminitis. The origin of a simple Podophyllin may be related to a blacksmith unsuitable or poorly made or due to trauma as a jumping session on a bad ground. The horse has a more or less large lameness, a warmth of feet, a fingered pulse. The diagnosis can be done in a clinically or by magnetic resonance.