So two days ago I woke up with a red patch on my hand overnight, which looked like a rash. However, it was not itchy or dry and was painless. I put some eczema cream just in case. The day after, it turned into a reddish-brown colour, kind of like a bruise. But it isn't a bruise and it is painless. It's smooth, no bumps. I haven't been using any new products on my skin, so there isn't a possibility of an allergic reaction. Actually, I haven't been doing or eating anything new, so I don't think its allergies. I don't go outside often, but sometimes I walk my dog and I'm usually outside for less than an hour. I don't wear sunscreen but I usually don't have problems with my skin and don't get burnt. The day before the patch appeared I did wear sunscreen and was out of less than an hour. I usually go out around 5-7pm when its not too sunny or hot.
Any ideas what it could be? I've tried looking for answers but I haven't seen anything close to what I have.
It does concern me a bit however I am unable to see a doctor because my mom doesn't think its serious.
It appears to be light brown patch with smaller red patches.
Here are photos: