About three weeks ago, i had a sudden and unexplainable episode of severe dizziness, and ever since then a constant feeling of lightheadedness and imbalance has taken over almost 100%. this feeling of diziness is most felt right after laughing hard for e

Inner ear: The commonest cause would be an inner ear disorder and I recommend an evaluation by an otolaryngologist who specializes in vertigo and inner ear disorders and who performs maneuvers to correct them. This speciaiist will refer you to a neurologist if it is deemed advisable and not a classic inner ear problem.

See doctor asap: for complete physical exam. May involve a neurology consult.