Does DPD have mood drops?

exactly as the title asks, does DPD have mood drops or could something else be causing it? I find when I get the slightest negative interaction my brain sends me into an emotional roller coaster and more often than not over something small or trivial I burst into unconsolable tears. I do have ADHD and this could be RSD but it only tends to happen with those i'm extremely close to such as my partner or very close friends. Please tell me i'm not alone here