When is the right time to visit a dermatologist?

My skin condition has been consistently bad lately, so I'm debating whether I should visit a dermatologist. I'm not sure if this is something I can manage with home care or if I need professional help. I'm also worried that delaying it might just make things worse. On the other hand, I feel hesitant about going too easily, so I'm conflicted. What criteria do you all use when deciding to visit a dermatologist? If anyone has experience, I would really appreciate it if you could share your criteria or tips!