What does it mean if you always feel nauseous?

People who always feel nauseous may have problems with the balance centers in the ear, brain and spinal fluid, or conditions related to the abdominal and pelvic organs, as reported by Women's Health Magazine. Viral infections commonly cause nausea, and nausea can also develop because of menstruation and constipation.

Individuals who always feel nauseous may be suffering from gallbladder disease, migraine headaches, early pregnancy, or the side effects of prescription or nonprescription medications, according to WebMD. Overeating and drinking excessive amounts alcohol can also cause nausea. Stress, fear and strong emotions can also contribute to a constant feeling of nausea.