Why Summer Hits Harder

 Spotlight 1 — Sweat, Salt, and Flares

Summer doesn't just feel harder on your skin — heat, sweat, and humidity are clinically documented triggers for both psoriasis and eczema, and summer brings all three at once. For skin already prone to flares, that combined exposure can create sustained stress over weeks or months.

Why it matters: For skin already prone to flares, the sustained pressure of a full summer season can overwhelm treatments that worked fine in winter — and that pattern is biology, not failure.

Perspiration contains salt and other substances that can irritate sensitive skin and weaken the barrier, especially when sweat stays on the body after time outdoors or physical activity. Warmer temperatures can also accelerate the inflammatory cycle that drives psoriasis plaques and eczema flares. Even humidity — which can feel hydrating at first — may disrupt the outer barrier layer and leave skin more vulnerable to irritation. Together, these factors can make summer one of the most difficult seasons to manage chronic inflammatory skin conditions.

Summer is one of the most challenging seasons for my patients with psoriasis and eczema — not because anything has changed in their bodies, but because the environment is doing extra work against them. Understanding that distinction is the first step toward managing it better.

• Rinse sweat off skin promptly after outdoor activity — contact time matters for both irritation and topical treatments.
• Track your flares by date and conditions. Patterns help your care team make better decisions about your treatment plan.
• At-home narrowband UVB phototherapy works differently than topicals — targeting immune activity under the skin, not just surface symptoms.