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.
Diagram showing Monarch butterfly migration (click to enlarge) 1) March; 2) April; 3) End of April; 4) April - June; 5) June - August; 6) September - November Monarch butterflies (Danaus plexippus) perform annual migrations across North America which have been called one of the most spectacular natural phenomena in the world.