Sometime around the four- to six-month mark, Pomeranian puppies go through a phase Pom owners affectionately refer to as the 'puppy uglies.' Their fluffy puppy coat sheds drastically in order to make way for their adult double coat. When this happens, they are often left with a scraggly, patchy coat of fur. No Pomeranian is immune, though some may have it easier than others.
Extra brushing and regular bathing during this time will help the process along. Poms may be more susceptible to cold temperatures and a coat or sweater may be necessary to prevent a chill.
During this puppy shed, coat color or markings may darken, lighten, or change entirely. The color change may be barely noticeable, but more obvious changes are possible—such as brown fur turning to cream or parti coloring appearing. The 'uglies' phase usually lasts until one year of age, when the adult coat finishes growing in.
Abnormal hair loss after one year of age may be attributed to 'alopecia x,' a disorder that causes hair loss in Pomeranians and other breeds. This symmetrical pattern baldness is also called 'black skin disease' because the skin may change color. Treatment does not always reverse the hair loss attributed to the condition, but it is not harmful and the hair loss is not contagious.