Doctors do not know exactly what causes cluster headaches. They seem to be related to the body's sudden release of histamine (chemical in the body released during an allergic response) or serotonin (chemical made by nerve cells).
Eucalyptus is a tree. The dried leaves and oil are used to make medicine. Though eucalyptus is used medicinally for many purposes, there isnât enough scientific evidence so far to rate it as effective for any of them.Eucalyptus leaf is used for infections, fever, upset stomach, and to help loosen coughs.ucalyptus is a tree. The dried leaves and oil are used to make medicine. Though eucalyptus is used medicinally for many purposes, there isnât enough scientific evidence so far to rate it as effective for any of them.
The more than 700 species of eucalyptus are mostly native to Australia, and a very small number are found in adjacent areas of New Guinea and Indonesia. One species, Eucalyptus deglupta, ranges as far north as the Philippines.oday, eucalyptus is the most widely planted type of tree in plantations around the world, in South America (mainly in Brazil, Argentina, Paraguay and Uruguay), Australia, India, Galicia and many more.