Itching can be prevented only to the extent that the underlying cause(s) of the itching sensation can be prevented. For example, careful use of sunscreen products can prevent the itching associated with sunburn. Keeping well hydrated and using moisturizers can prevent the itch associated with dry skin. It is also possible to take preventive measures to avoid contagious conditions like sexually transmitted diseases, or tick or bug bites , or lice infestations that may be the sources of itching. Itching associated with serious conditions like skin cancers and liver or kidney disease cannot typically be prevented.