Dreams involving family members and health issues can often reflect our concerns or anxieties about their well-being. Seeing your father with a cold sore in your dream may symbolize a fear of vulnerability or a sense of powerlessness regarding situations affecting loved ones.

The car may represent your journey through life or your relationship with your father. If you felt scared in the dream, it might suggest that you're worried about his health or the potential for discomfort in your relationship. Cold sores can also symbolize something that is hidden or not openly discussed, possibly indicating there are feelings or issues between you and your father that need addressing.

Consider reflecting on your current relationship with your father and any underlying concerns you may have. It might be helpful to communicate openly with him about your feelings or any worries you have.