The answer depends on the type of massager that you are about to buy. Most hand massagers are suitable for people who are suffering from arthritis or carpal tunnel syndrome. These units are effective in reducing the pain and help the people to get rid of these issues.
However, if you are buying a hand massager to treat the issues mentioned above, you should check out the properties of a hand massager before buying. Not all massagers are helpful in this situation. The otherwise to do there is to consult with your physician before making the final decision.