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.
Headaches from fever. 1  A fever is part of many illnesses, most commonly viral infections. 2  With a fever the blood vessels in the whole body dilate (get wider). 3  Dilated blood vessels in the scalp and around the brain cause pain-headache.auses of headaches in children include: 1  fever (many illnesses which cause a fever have a headache as part of the picture). 2  ear, nose, throat or sinus infections. 3  infections of the brain or around the brain (meningitis, encephalitis). 4  injuries to the brain, head or neck (bangs, concussion, heat exhaustion or too much sun).