There are various dermatological disorders and systemic conditions including drugs and medications, which may lead to pigmentation.
- Pigmented Contact Dermatitis : Hyperpigmentation from allergen exposure, often on face, neck, and underarms.
- Pigmented Photo Contact Dermatitis : Caused by musk fragrances, certain drugs, and sunlight; treated by avoiding triggers and using lightening agents.
- Lichen Planus Pigmentsosus : Common in India, difficult to treat, slate-gray to brown-black pigmentation on face, neck, limbs.
- Macular Amyloidoses : Common in Indians, pigmentation on arms and back from friction and hot showers.
- Pigmentation Treatment : Medical evaluation, strict sunscreen use, avoid triggers, and apply skin lightening treatments.