Is neglecting/gaslighting your child medically a BPD thing?

For as long as I can remember, I've always known that if I don't fully prove my illness to my ubpd mom, she wouldn't bother, or worse yet, she'd scold or gaslight me. This week, as I was at my doctor's office, I couldn't help but think of some moments in my childhood that I remember very vividly. I was about 13 or 14 years old when I had a serious allergic reaction to a piece of chocolate I ate. The reaction was hives with excruciating pain and itching. What infuriates me to this day is the lack of action/emergency on my mom's part. I can never understand a parent ignoring their terrified child who has no idea what hives are. She thought I was faking it until I showed her my body. Her action? She proceeded to give me some herbs to put on the hives. I was alone in the bathroom putting them on my body while crying. My brother showed much more concern than my own mother. By the time I went to school, the hives had disappeared from my face but remained in other parts of my body. I still remember how I couldn't sleep the night. The irony is that she got the same allergic reaction a few weeks later, and guess what? She went to the doctor. When I confronted her about it, she said she didn't know I went through the same experience. To this day, I feel sorry for that child/teenager who had to endure the pain alone. Another memory is from when I was 8 years old. I had a severe ear infection, and she ignored it for several days until my brother was like, "She's basically losing her hearing." When we went to the doctor, he was appalled. "She had to put up with this pain all these days?!!" he asked my mom. Anyway, I'm now wondering if medically neglecting one child while being so proactive with another is a BPD thing (she never does that to my brother).