If a plate with oceanic lithosphere meets another plate, the dense oceanic lithosphere dives beneath the other plate and sinks into the mantle: this process is called subduction. The sinking oceanic lithosphere drags the rest of the tectonic plate: this is the main cause of plate motion.
You may notice a decrease in symptoms during the build-up phase, but it may take as long as 12 months on the maintenance dose to notice an improvement. If allergy shots are successful, maintenance treatment is generally continued for three to five years.
Font Size. A. A. A. Allergy shots help your body get used to allergens, the things that trigger an allergic reaction. They donât cure allergies, but eventually your symptoms will get better and you may not have allergic reactions as often.fter that, youâll usually get a shot every 2-4 weeks for 4-5 months. Then your doctor will gradually increase the time between shots until youâre getting them about once a month for 3-5 years. During that time, your allergy symptoms will get better and may even go away.