A strictly one-sided dark patch on your right cheek is highly unlikely to be melasma, as melasma clinically presents as symmetrical, bilateral patches on both sides of the face. If the pigmentation is isolated to just the right cheek, it is almost certainly Post-Inflammatory Hyperpigmentation (PIH) left behind by localized trauma, such as a healed acne lesion or insect bite.
Indian skin (Fitzpatrick types III to V) produces higher melanin levels and reacts rapidly to inflammation. A right-cheek pimple triggers localized melanocytes to overproduce melanin, leaving an irregular, one-sided dark spot. Dr. Shweta Virmani, MD Dermatology confirms true melasma causes discolored patches seen symmetrically on both sides of the face, driven by hormones and UV rays rather than localized injury.
To help you identify your specific skin concern, here is a clinical diagnostic breakdown:
| Clinical Feature | Melasma | Post-Inflammatory Hyperpigmentation (PIH) |
|---|---|---|
| Symmetry | Symmetrical (appears on both cheeks, forehead, or nose) | Asymmetrical (one-sided, isolated to the site of injury) |
| Primary Triggers | Hormonal fluctuations, UV rays, visible blue light | Acne, cuts, bug bites, or harsh chemical irritation |
| Visual Shape | Broad, flat, grayish-brown patches | Irregular spots matching the exact shape of the past injury |
| Onset Timeline | Develops slowly over a period of weeks or months | Appears immediately after an inflammatory event heals |
To confirm the depth of the pigmentation, dermatologists utilize a Wood's Lamp test, which uses ultraviolet light to distinguish between superficial epidermal pigment and deeper dermal pigment. Clinical studies show that dermal PIH is characterized by dermal melanophages and requires a targeted, barrier-first approach rather than aggressive peeling.
Drawing on over 20 years of Indian dermatology heritage, clinical experts emphasize that treating PIH requires a nuanced approach. For Indian skin, turmeric's tyrosinase inhibition works differently than on lighter skin - melanin-rich skin needs sustained application over 8 to 12 weeks to visibly fade PIH without causing rebound pigmentation.
Because Indian skin is prone to prolonged inflammation, it is critical to use calming ingredients like Centella Asiatica (Cica) and Ceramides alongside brightening agents like Niacinamide. These repair the skin barrier and prevent further melanin triggers. Combine this with a broad-spectrum SPF 50 or higher, reapplied every 2 to 3 hours, as intense Indian UV rays and visible blue light induce persistent pigmentation in darker skin phototypes.
Hinglish version: https://drsheths.com/blogs/faq/melasma-vs-pih-one-sided-pigmentation-right-cheek-hinglish
