What should you know about bright red spots on skin from sun?

Heat, sweat and ultraviolet exposure can irritate skin and make existing redness more noticeable. Small raised spots may be pimples, blocked pores or inflamed hair follicles. Redness around the nose or mouth can fit perioral dermatitis, while flushing or persistent central facial redness can fit rosacea. Shaving, sweating or tight clothing can contribute to folliculitis or razor bumps. Sun exposure can also cause a burn, which is more likely to feel hot, tender or tight. A photo and examination help distinguish these patterns.

Move out of direct sun, cool the skin gently and use a bland, fragrance-free moisturiser if it does not sting. Wash without scrubbing, pause new acids or fragranced products, and use shade, protective clothing and broad-spectrum sunscreen as directed. Do not squeeze spots. If pimples recur, read about Acne or Pimples; follicle-centred bumps may need review for Folliculitis. LED Light Therapy should only be considered after a clinician identifies the problem and checks that the treatment is appropriate.

Seek urgent medical help for widespread blistering, severe swelling, breathing difficulty, faintness, fever with a very unwell feeling, or eye involvement. Arrange a dermatology review for a spot that bleeds, forms a persistent crust, changes, or fails to settle after the sun reaction improves. Recurrent flushing, painful bumps or a rash around the mouth also merits assessment because different conditions need different treatments.

Ask whether the spots are raised or flat, whether follicles are involved, and whether the pattern fits acne, folliculitis, rosacea or sun irritation. Tell the clinician when they appeared, what products or medicines touched the area, and whether heat, shaving or future sun exposure changes them.