Heavy pruning done after growth starts in spring can weaken a tree because it forces the tree to use stored food for re-growth instead of for new growth. Heavy pruning during late summer should also be avoided because it can stimulate lush, succulent growth.Elm, ash and oak are an exception.eavy pruning done after growth starts in spring can weaken a tree because it forces the tree to use stored food for re-growth instead of for new growth. Heavy pruning during late summer should also be avoided because it can stimulate lush, succulent growth. Elm, ash and oak are an exception.
A childâs tension-type headache is frequently caused by tension or stress, depression, or insufficient rest. Tension-type headaches do not have the hereditary factor that migraines do, and they are not caused by organic problems or serious diseases.
Migraine is a type of really bad headache often felt on one side of the head. Some children get migraines every now and then, while others get them more than once a week. The headaches can range from being mild to very severe. It's not exactly clear what causes migraines, but they are likely to happen when blood vessels of the head and neck spasm (shake) or become narrow (constrict).