Some of the migraine medications used to treat or prevent migraine headaches are also used for other conditions. Antidepressants, anticonvulsants, antihistamines, and narcotic pain relievers are all used in migraine therapy.
These insects either have hemimetabolous development, and undergo an incomplete or partial metamorphosis, or holometabolous development, which undergo a complete metamorphosis, including a pupal or resting stage between the larval and adult forms. In hemimetabolous insects, immature stages are called nymphs.
A dragonfly in its final moult, undergoing metamorphosis from its nymph form to an adult. Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation.