Below the age of 20, acne can cause dark spots due to scarring and red marks left by the infection. Skin Diseases That Cause Dark Spots Melasma: Itâs one of the commonest causes of grayish patches on the face. It mostly affects the forehead, cheeks, or the area between your mouth and nose.
The definition of a titter is a nervous and half-hidden laugh. An example of a titter is the laugh made by a schoolgirl in class. verb. To titter means to laugh or giggle in a somewhat suppressed way. An example of to titter is the laugh of a nervous toddler.
A repetitive, rapid, sudden muscular movement or vocalization, usually experienced as involuntary or semivoluntary. 2. A quirk or habit of behavior or language: common phrases that have become verbal tics. intr.v. ticced, ticÂ·cing, tics. To have a tic; produce tics: factors that affect the frequency of ticcing.