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.
1 Complete metamorphosis: a change in body form with four stages: egg, larva, pupa, and adult. 2  Exoskeleton: hard body covering... more. 3  Instar: stages in the growth of a larva.  Larva: the second, worm-like stage in the life cycle of insects that undergo complete metamorphosis (like caterpillars).