Pseudogout is a joint disease that can cause attacks of arthritis. Like gout, the condition involves the formation of crystals in the joints. But in pseudogout, the crystals are formed from a salt instead of uric acid. Alternative Names. Calcium pyrophosphate dihydrate deposition disease; CPPD disease.
Every autumn, around three million Monarch butterflies will travel around 3,000 miles to inhabit the mountains of central Mexico or small groves of trees along Californiaâs coast.
There are three species of monarch butterflies: 1  D. plexippus, described by Linnaeus in 1758, is the species known most commonly as the monarch butterfly of North America. 2  D. erippus, the southern monarch, was described by Pieter Cramer in 1775.