If you want to monitor your health, you could do worse than looking at mirror and scrutinizing your body. Are your eyes pink? Did your nails turn brown at the top? Acknowledging a few changes will help you pay attention to potential problems. Be vigilant of these changes and if they persist see your doctor.
Rough spots vary greatly in symptoms and levels; it could be temporary or permanent, painful or painless. Crusty blemishes or keratoses are usally benign. Dark ones are heriditary but harmless. Solar keratoses are caused by sun damage and could cause skin cancer so make sure you see a doctor.