Excellent question, thanks for writing. Let me say right up front that "Affective Personality Disorder" is not a real diagnosis - you are absolutely correct about that. I don't know exactly what was discussed by the psychiatrist, but the diagnosis you took away from the meeting was not accurate.
Having said that, I also fully support your armchair diagnosis of unresolved grief and issues related to masculinity (you know your husband pretty well, after all!). In fact, the symptoms your husband is demonstrating are all signals to indicate masculine depression. When men get depressed, they do not typically follow the "classic" path of behavioral manifestations. In other words, men do not tend to get frumpy and downtrodden... rather, they tend to get angry. They grow argumentative, snarly, and irritable (sound familiar?). So yes, I think he is seriously internalizing the frustration and helplessness he feels from the situations you described - driving the needle into the red zone regarding stress and depression. Further, once these feelings are trapped (think about shaking a sealed coke bottle for too long - the pressure has nowhere to go), then physical complications almost invariably follow. You husband is having ticks, but it would not surprise me if he also develops gastrointestinal problems, tension headaches, or hypertension.
In any case, the treatment protocol that the psychiatrist is following is not out of the question, and may help a lot. Regardless of the diagnosis, antidepressants are the way to go here. I would add that a talk therapist could serve your husband well - particularly a male therapist who understands men's issues. The low sperm count, the losses, and his father's illness are all salient and need to be addressed. The talk therapist will be able to let some of the pressure out of the Coke bottle, and in conjunction with the medication, prove to be very effective.
The only caveat you may wish to have the doctor keep an eye on is the need for the mood stabilizers. If the antidepressants begin to alleviate the depression, then he may not demonstrate and of the bipolar symptoms the physician is treating.
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