First Google search 'spontaneous human combustion'. It is a common cause of fatalities concealed by the govt. If you recognise it early you may be able to treat. You will need to determine the source of combustion (eg electrical, paper, gas etc) and use the appropriate extinguisher internally.
She's in love but I think you need to bond more so it doesn't feel like she's burning through your skin
When the temperature hit the negative degrees, it will be bone chillingly cold. If the skin is exposed to these temperatures, it can feel like you are burning because the skin can start to become frostbitten.
Acids typically feel like a burning or stinging sensation, while bases feel slippery or soapy. It is important to handle both with caution and avoid direct contact with skin.
If you mean 'Alkali (s) , or base, it is the opposite of an acid. And like acids on skin, it can cause and feel like burns - it can actually cause chemical burns. I have had such an experience from hydrochloric acid personally, and it is very painful. So alkalis can cause chemical burns, and cause a burning feeling on exposed skin.
They have skin, so they feel like us
Untreated shock would make the skin feel cold and clammy.
I fell like a burning or tingling sensation
If in mineral form, they would feel as rough as any other rock. If put directly on skin, however, bases feel soapy (because they literally turn your skin into soap) and acids feel like a burning sensation (for a short time; then they burn out your nerve endings and you can't feel anything).
A Dolphin
hard
Slippy
It's dry - having a similar feel to leather.