Genuinely curious -- I have a small mole on my left side that is really tiny, smaller than a pencil eraser; doesn t hurt to touch, but sometimes when I have just scratched myself in that area the portion where the mole is stings. It s doesn t hurt to a simple touch, but if scratched by my finger nails, it stings. So, my question is...is it normal for that to happen? It hasn t changed color or size in years, and it s only if it s scratched.