Ginger oil is used in the treatment of fractures, rheumatism, arthritis, bruising, carbuncles, nausea, hangovers, travel and sea sickness, colds and flu, catarrh, congestion, coughs, sinusitis, sores on the skin, sore throat, diarrhea, colic, cramps, chills and fever. Ginger oil is non-toxic and non-irritant (except when used in high concentrations) but could irritate sensitive skins and can also cause photosensitivity.