Given that you suspect TLE, perhaps a drug like lamotrigine or carbamazepine will the the right choice for you since it would address both issues.
I've dabbled with lamotrigine a bit at low doses of 12.5 mg daily. It did have a nice antidepressant effect, but did not help my anhedonia. Though it did alleviate my blunted emotions a bit, and improved my sociability quite substantially.
However, I noticed that my desire and ability for reading scientific and biochemical research online, and my desire and ability to laterally and creatively think about these biochemical subjects, was quite diminished on lamotrigine, and instead I found I wanted to do more simple and physical organizational tasks around the house, like moving furniture, organizing my desk, or house cleaning. So that's a possible negative of lamotrigine.
I have not thoroughly tested out lamotrigine though; I've only taken it for periods of a week or two. I know it can have withdrawal symptoms, so I am little wary of that. I need to test it more.
In general though I would not say my TLE or bipolar-like symptoms were a major impediment. I lived relatively normally with these TLE / bipolar symptoms, and would be happy to go back to my old self with just these TLE symptoms and nothing else. The short-lasting dysphoria states I experienced are not nice, but I just got used to it.
However, after I had a suspected viral brain infection in 2005, I developed ME/CFS and various new and nasty mental symptoms like severe anhedonia, blunted affect, depression on and off, generalized anxiety disorder (now fixed), some social withdrawal, ADHD, sometimes some very mild psychosis symptoms.
Literally just this week I learnt of a mental illness called
simple schizophrenia, which unlike classic schizophrenia does not manifest any hallucinations or delusions. Simple schizophrenia sufferers only have the so-called negative symptoms of schizophrenia, like anhedonia, blunted affect, social withdrawal, but not the positive ones like hallucinations, hearing voices and delusions. So with simple schizophrenia you don't have the classic major psychosis symptoms.
So I am now wondering whether my suspected encephalitis might have triggered simple schizophrenia, which might explain some of my symptoms. I've benefited from very low dose amisulpride, which is a third-generation antipsychotic (also known a dopamine system stabilizer drugs).