night sweats

I believe I found the answer, see link: health.facty.com/ailments/body/10-causes-of-night-sweats/8/

I didn't have this before my injury and it only happens once or twice a month usually.

Sam, I echo the words of Tetra. You have to be aware of any changes in your body, particularly sweating and feeling odd. It's possible that you are suffering from autonomic dysreflexia. You have high cervical injuries but I believe you are incomplete, so may not suffer from autonomic dysreflexia. I get it frequently, at least three times a week. I do not sweat but I feel a certain heaviness in my torso and throat and my pulse rate drops. I'm surprised at how many people on this forum do not realise they may be having a dysreflexic attack, or do not realise the dangers of dysreflexia. In fact some people seem unaware of the fact that autonomic dysreflexia even exists. I have a nifedipine capsules on the side, ready to be opened. In fact I've even got nifedipine laying in a small pool in a little dish, with a cotton bud handy so that I can dip it in and spread it under my tongue when necessary. The blood pressure gauge is on my desk, always on my desk. God dammit, I've even got an oxygen saturation metre and a thermometer and urine deep test strips, too. I know what my oxygen saturation levels are, my pulse and my blood pressure at various times of the day. One could say it's a little bit obsessive.  Obsessive is my nature.  But I'm still alive and I'm still well and all my vital organs are fine at the time of writing.  Can't guarantee what they will be like by the end of the evening, though