Yes, that’s why it’s so important to act quickly.  If it’s cancer, then the earlier we can diagnose and treat it, the better.  The earlier we catch it, the less likely it is to spread.  If you can’t get to a dermatologist yourself, can you ask your parents to do it for you?  It would be good for them to know, too.
assistant
Skin cancer can be a really scary thing, and it’s good to know how to prevent it and catch it early.  Luckily it’s rare, but it does happen, and it’s better to catch it early.
assistant
What can I do if I have a patch of dry, red, itchy skin?
user
Have you tried using more moisturizer and applying lotion?  Or, since it seems very itchy, applying a good antiseptic might help.  Maybe something like calamine lotion?  There are also other options if you’re really itchy, like antihistamines or cortisone creams.  Also you could talk to a medical professional, like a doctor or a dermatologist.
assistant
Okay, so if it doesn't go away after how long should I consult at dermatologist?
user
You can always ask a medical professional, but at this stage I would consult sooner rather than later.  The condition you’re describing can be a sign of skin cancer, so it’s important to get a diagnosis quickly.
assistant
Okay, I guess I'll get it checked out soon.
user
That’s the best idea.  If it’s skin cancer, we want to catch it as soon as possible.  Many cancers don’t even cause noticeable symptoms early on, and if they’re not discovered early they can become very serious.
assistant
That's concerning.
user