A value of NULL indicates that the value is unknown. A value of NULL is different from an empty or zero value. No two null values are equal. Comparisons between two null values, or between a NULL and any other value, return unknown because the value of each NULL is unknown.
Skin Spots on the Face. Most causes of spots on face are harmless. They can be a variety of colors including white, red, black or brown. Common causes include cumulative sun exposure, acne, and skin tags. Keratoacanthoma (hyperkeratosis) is a lesion that grows rapidly, usually on areas exposed to the sun.
Sideburns are the area of facial hair that grow down the sides of the face, in front of the ears. They can be worn alone or can connect the hair of the scalp with the rest of the facial hair. (NOTE: Sideburns are not formed from scalp hair grown long and styled downward to cover the sides of your face.