Paranoid Personality Disorder?

I am a 42 years old and have been dating my boyfriend 48 for 4 years.  We have lived together just over a year.  He is a wonderful person most of the time, but has episodes of bizarre behavior periodically.  It appears to me he has paranoid personality disorder probably coupled with some other maladies, but I am not sure.

He is very intelligent, owns a successful construction company, is the hardest worker I have ever seen . Hyperactive.  And has a definite need to be self sufficient.  He is well respected and is viewed by other men as

[Roger Gould, M.D.]

I can't give you a name for this problem, but it is definetly a mental health problem and there is really nothing else for you to do other than to get him into the hands of a good psychiatrist.

[dixiecup]

Copied this from a bipolar disorder website:                    Signs and symptoms of mania (or a manic episode) include:
Increased energy, activity, and restlessness
Excessively "high," overly good, euphoric mood
Extreme irritability
Racing thoughts and talking very fast, jumping from one idea to another
Distractibility, can't concentrate well
Little sleep needed
Unrealistic beliefs in one's abilities and powers
Poor judgment
Spending sprees
A lasting period of behavior that is different from usual
Increased sexual drive
Abuse of drugs, particularly cocaine, alcohol, and sleeping medications
Provocative, intrusive, or aggressive behavior
Denial that anything is wrong

There is medicine that can help, but some won't take it thinking that nothing is wrong with them. Bipolar Disorder usually gets worse as the person ages, especially without medication. You are going to have a very hard time if you stay with him.