Consult a ent specialist to cut any Inner ear problems. These chronic problems best treated in homoeopathy. These may be genetic or may be problems in ur nerve . Homoeopathy is best suitable for this kind of diseases and u must take a chronic treatment and proper follow up treatment. Consult homoeopathic doctor in ur area or contact me online or offline and take treatment.

Hello greetings! This problem of your usually gets worsened by preoccupation that u will anyways end up vomiting during travel. U could first start believing u would not get nausea.. u could avoid eating to full stomach before travel and choose lite / food with very minimal oil. Usually sniffing on to citrus fruits like lemon would help! U could take a few meds before travel to avoid this feeling before u start.

Homeopathy can give you a long term solution fir this . Meet a good homeopath who will take your history and provide you with a best solution. I can help you too .