Long-term sun exposure is considered the main cause of IGH. Over many years, ultraviolet (UV) rays gradually damage melanocytes, the cells that produce melanin. When these cells become less active or disappear entirely in small areas of skin, those areas lose pigment and appear lighter.
In simple terms:
UV exposure damages pigment-producing cells
Melanin production decreases in specific spots
Those areas appear pale or white
Importantly, these spots are not dangerous and are not linked to serious medical conditions.
Can IGH White Spots Be Treated?
At present, there is no proven medical treatment that can permanently remove IGH.
You may see various options mentioned online, including:
- Topical retinoids
- Chemical peels
- Laser or light-based treatments
Dermatology experts note that once melanocyte cells are lost, it is difficult to restore pigment. As a result, these treatments tend to offer inconsistent or temporary results, which is why they are generally not strongly recommended for IGH alone.
