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.
Lemon eucalyptus is a tree. Oil from the leaves is applied to the skin as a medicine and insect repellent. Lemon eucalyptus oil is used for preventing mosquito and deer tick bites; for treating muscle spasms, toenail fungus (onychomycosis), and osteoarthritis and other joint pain.il from the leaves is applied to the skin as a medicine and insect repellent. Lemon eucalyptus oil is used for preventing mosquito and deer tick bites; for treating muscle spasms, toenail fungus (onychomycosis), and osteoarthritis and other joint pain.