Dreams involving health crises, especially with loved ones, can evoke strong emotions and often reflect underlying concerns or anxieties. In your dream, the seizure may symbolize a feeling of helplessness or fear regarding your nephew's well-being or perhaps a broader anxiety about family dynamics. The reptilian eyelids could represent something that feels unnatural or alarming in your life – perhaps a situation or behavior that is out of the ordinary.

The urgency to communicate something important to your sister suggests there may be unresolved issues or feelings you want to express in your waking life. It could be beneficial to reflect on your current relationships and see if there are conversations that need to happen or feelings that need to be shared.

Consider whether there are specific worries about your nephew or family matters that have been on your mind. This dream might be urging you to pay attention to those feelings and take action in your waking life.