White patches on the back may be related to post-inflammatory hypopigmentation, pityriasis alba, vitiligo and other factors.
1. Post-inflammatory hypopigmentation: Post-inflammatory hypopigmentation refers to the inflammatory reaction of the skin, resulting in the lack of melanin in the patient’s skin, which will lead to the appearance of white patches on the back.
2. white furfur: white furfur usually occurs in adolescents and children, not only will appear white patches, there will be a little bran-like scales.
3. Vitiligo: the above situations may be related to vitiligo, especially with genetic or immune disorders.
There may be other reasons for the appearance of white patches on the back, it is recommended to go to the hospital in time to carry out the relevant examination, clear cause of the disease and then actively symptomatic treatment.