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.
Some insects have what is called 'incomplete metamorphosis '. This means that a small insect, called a nymph comes out of the egg, and the nymph looks almost the same as the adult insect. As the nymph grows, it does not change the way it looks, but only how big it is.