<prompt> Answer this question truthfullyWhat does decreased skin pigmentation mean?  <response>: <reason> Determine degree of hypopigmentation and depigmentation Family history of thyroid disease, diabetes and endocrine problems Obtain personal history, include:allergies hay fever asthma these may help determine the diagnosis of atopic dermatitisperform eye exam to aid in diagnosis of albinismWoods lamp exam can be used to emphasize Hypo- and depigmented areas 