My Mum has alzheimers and my Dad is now her full time carer. She can no longer be left of her own as she has wandered a few times, and needs help with everything - dressing, showering, toileting, eating etc. She cannot communicate very well at all - she understands a lot of what you say, but cannot construct a sentence to reply. My Dad was not coping with the personal care, so we now have carers come in morning and evening to help. My Dad has extremely little patience and gets frustrated and angry easily, and I could see that things were strained between them both. I have spent a lot of time recently helping out to give Dad a bit of respite, and things did improve. However, the last 3 weeks I have been unable to do this, and I have started to see the situation deteriorating again. I have recently noticed some bad bruising on Mum and I have a suspicion that this may have been caused by Dad. I have also noticed that the carers that come around have noticed it, and have noted it down in the daily records. I do not really know what to do from here - I know my dad is doing his best to look after Mum, but at the same time I know I need to protect my Mum. Can anyone help to advise on how I should approach this?