Melanoma is the deadliest form of skin cancer, and that's why knowing how to recognise melanoma symptoms is drilled into our heads every summer. Thing is, melanoma is actually the rarest type of skin cancer, and it's the only one characterised by new or changing moles.

"Non-melanoma skin cancers like basal cell or squamous cell are what we call skin-derived cancers, not mole-derived," says dermatologist Dr Adam Friedman. Translation: They don't show up as moles.

And considering both basal cell and squamous cell skin cancers are more common than melanoma, it's probably time you learned about their warning signs and symptoms—not to mention the symptoms of melanoma that have nothing to do with moles.

Here's what to watch out for.