Right sided body weekness/uncomfortable.

My husband is experiencing weekness/uneasy feel in right leg,right hand, bloated feeling on right abdomen,irritation in the right eye, conjestion in the right nostril, irritation on right side of throat, itchy sensation in right ear, tasteless feel in the tongue. These are the symptoms he is going through. Wanted to check if this is something related to functioning of brain or with the blood vessels. We are clueless on whom to consult regarding this. We have already consulted gastroentologist(initially we expected it to be due to acidity) and ENT specialist. He is going through this since a year now. We are worried about why only right side of the body is affected. This is making my husband anxious and causing lack of sleep. Can anyone suggest whom we can consult about this? Is there any reason for this in Neurology. Thanks in Advance!