- (Fig. 1) .
- Cause : unknown etiology.
- Treatment : sometimes resolves without treatment. Probably responds to doxycycline or glucocorticoid administration although scientific studies have not been performed.
- Prognosis : good.
- (Fig. 2) . The feet are usually not painful at this stage.
- Pads are crossed with white, scaly cracks.
- The swelling is soft and uniform such that the normal pad symmetry is not altered.
- Ulceration and hemorrhage occur (which may be result of secondary infection).
- May be pain and lameness, especially when ulcerated.
- Regional lymphadenopathy.
- Lightly pigmented pads may become purple in color.
- Plasma cell stomatitis and vegetative plaques at bars of mouth have been reported concurrently.
- Good but may recur at intervals.
- Seasonal recurrence in some individuals suggests an allergic etiology.
- Some may regress spontaneously.