European health professionals prescribe lavender oil for an array of ailments digestive disorders, earaches, respiratory illnesses kind disorders, and sore throats. Lavender oil clears the congestion and stuffiness of sinusitis and other respiratory ailments; it soothes sore throats, laryngitis, and tonsillitis. Lavender oil eases the pain and discomfort of muscular aches, spasms, and injuries and helps to heal bruises, cuts, and insect bites. It relieves the pain of migraines and tension headaches. It is also useful in reducing some of the symptoms of chronic fatigue syndrome and helps to boost immunity.