| • | appear 20 or more years after chronic arsenic ingestion |
| • | most common on palms and soles |
Fowler’s solution (potassium arsenite solution):
| • | pentavalent, inorganic arsenic |
| • | also increased risk of bladder cancer |
changes in pigmentation:
| • | small, round, white macules on a hyperpigmented background |
| • | “rain drops on a dusty road” |
|