I've had mini-meltdowns before, usually during times of overwhelming stress or emotional content. I tend to shut off completely and lose the ability to feel emotions for an extended period of time - not sure if this falls into meltdown territory. When my grandmother and grandfather died, this happened, and I basically went numb for an extended period of time (weeks/months). When my wife cheated on me this happened, and it took me a year to recover (not sure I've recovered completely tbh). However, last week I experienced the first actual "meltdown" that I've had since my apartment was robbed in 2003.
We just had a new baby, and between the stress of recently becoming the sole earner a single-income household in a job I hate, battling an encroaching depression, and the stress of having a pregnant hypersensitive wife who actively thinks she is dying every time something hurts, I was at my wits end. She made herself go into labor, and we had a very stressful but productive weekend at the hospital, and a new baby emerged. The days passed and we came home from the hospital. There were a lot of unfinished projects and incomplete setups in our apartment, as the baby was sudden and I was, for whatever reason, being expected to fill both the role of the provider, and the stay-at-home parent, as my wife hates cleaning (and this was extremely accentuated during her pregnancy). So, one thing led to another after we returned home from the hospital, and our little apartment turned into a battleground over why she hadn't done nearly anything around the house in two and a half years of being out of work, my obsessive behaviors, and whether or not I actually loved her and our children. I usually take these moments to withdraw into myself as I find it very hard to follow emotionally charged battles of will with my wife (or whomever), but she kept pressing me. I warned her... I was reaching the point when I would no longer be able to restrain myself, but she kept pressing on. At that point I pretty much lost track of what was happening, saw red, and a massive screaming match ensued. She threatened to leave with my child, I followed her into our bedroom and let out a maniacal battlecry in her face, and things just went downhill from there.
After the smoke cleared, it took me a long time to regain myself. I was shuddering and beyond words for an extended period. I guess this was a true-and-honest meltdown. I have vague memories of this incident (most of what happened was told to me later by the wife). This incident scared the living s**t out of me - it made me aware that I am not in control of my emotions if I am pressed. I think I need to get this thing professionally diagnosed, and I think my wife needs to come with me during this process, so she can understand what goes on inside of me, and what my emotional and stress limits are.