There could be several Dizziness and Nausea causes. Heart problems, Kidney problems, Anemia, Anxiety all can cause dizziness and nausea.
Vertigo is not a disease, but it can be an indication or signal for some other serious internal problem or illness. During dizziness patient feels like all outer surroundings are spinning or whirling around him. Mostly this kind of vertigo or dizziness is unpredictable and occurs suddenly and it is invariably accompanied with disequilibrium, nausea and lightheadedness.
Internally, dizziness is actually a reaction to a disorder of the nerves and other mechanism structures like vestibular system. Vestibular system helps in maintaining the equilibrium of the body and sense the position of the head and movement of other body parts. Vertigo also results in involuntary movements of eyes. The condition of victim worsens if he sits or moves his head quickly during vertigo.
Migraine, Meniere’s disease, ear inflammation and Acoustic Neuroma are found to be some of the major causes for dizziness and nausea. Apart from this some of the other medical conditions that also found to cause dizziness and nausea are: stress, depression, anxiety, gasteroenteritis, irritable bowel symdrom, kidney stones or kidney failure, acid reflux, brain tumor, cancer, HIV and Addison disease. Smoking cigarettes is also found to be major cause for feeling dizzy.
A quick change of position of head (or benign paroxysmal positional vertigo) is one of the common cause of feeling dizzy, it usually happens in morning when people try to get up quickly. This happens as calcium carbonate crystals of ears become lose with quick motion and enter into wrong areas of ear canals resulting in stimulation of ear sensors and cause vertigo attack.
Knowing the exact cause of dizziness and nausea is very important for treating this condition. If you treat the underlying cause, the problem of vertigo will automatically go away. There are certain medications also available over the counter that immediately relieves the sensation of dizziness and nausea but unless you treat your actual problem they will keep attacking back.