I live in a high altitude area and the dark patch on my right cheek gets worse in summer, is it melasma?

A dark patch appearing exclusively on your right cheek is clinically unlikely to be melasma, as melasma typically presents as symmetric brown-to-gray patches on both sides of the face. In high-altitude areas where UV radiation is significantly stronger, a unilateral (one-sided) dark patch that worsens in summer is more likely localized sun damage (solar lentigines) or Post-Inflammatory Hyperpigmentation (PIH).

Drawing from over 20 years of Indian dermatology heritage, it is well-established that melanin-rich Indian skin (Fitzpatrick skin types III to V) reacts aggressively to UV exposure. Dr. Harshna Bijlani, medical head at The AgeLess Clinic, explains that Indians living in the tropics tend to wrinkle less but pigment heavily. Furthermore, visible light at 415 nm causes increased pigmentation lasting up to 3 months in darker skin tones.

To understand your pigmentation pattern, dermatologists often use specialized devices like a Wood's lamp to determine pigment depth. However, visual asymmetry is a key diagnostic marker. While the centrofacial pattern of melasma accounts for 50 to 80% of cases, it almost always appears symmetrically. A patch isolated to the right cheek strongly points toward localized sun damage rather than hormonal melasma.

Pigmentation Identification Grid

Treating high-altitude pigmentation requires caution, as aggressive bleaching can backfire on Indian skin. Dr. Jaishree Sharad, celebrity cosmetic dermatologist, warns that long-term use of harsh prescription creams causes ochronosis, a severe form of hyperpigmentation. Supporting this, Dr. Rinky Kapoor, Board Certified Dermatologist, notes that hydroquinone concentrations higher than 4% can result in paradoxical skin darkening.

Instead of harsh actives, melanin-rich skin needs sustained tyrosinase inhibition paired with barrier repair over 8 to 12 weeks. Apply a serum containing Niacinamide and Haldi (turmeric) to regulate melanin transfer without irritation. Follow with a moisturizer rich in Ceramides and Cica (Centella Asiatica) to combat the low-humidity barrier damage common in high-altitude regions.

Finally, strict photoprotection is non-negotiable. Since high-altitude environments exponentially increase UV exposure, standard sunscreens fall short. Use a broad-spectrum SPF 50 containing physical blockers like zinc oxide or iron oxide, applying two fingers' worth every three hours to shield against both UV and blue light-induced pigmentation.