Acanthosis nigricans is dark, thick, velvety skin, usually on the neck, armpits, groin, or under the breasts. It doesn’t itch or hurt but can be noticeable. Eating healthier, using topical retinoids, and mild acids can help improve it.

Pseudofolliculitis, also called razor bumps, is red bumps that appear after shaving, waxing, or plucking. It’s more common in curly hair, especially in skin of color, when hairs curl back into the skin, causing irritation, redness, and sometimes dark marks or scars.

Bruises happen when small blood vessels under the skin break, trapping blood without breaking the skin. They can be unsightly and are more common with sun damage, aging, medications, or low Vitamin C or K. Over-the-counter options can help.

Stasis dermatitis (venous eczema) is common in older adults. It causes dry, itchy skin on the shins, ankles, and tops of the feet. Weak leg veins and swelling stretch the skin, leading to eczema. Treatment focuses on compression, leg elevation, moisturizing, and topical medications.

Ringworm is a fungal rash that can be itchy. It usually comes from another person (often athletes) or an infected pet. It starts as a single, ring-shaped spot that grows over time. Most cases improve with over-the-counter antifungal treatments.

Tinea versicolor is a common yeast rash that usually doesn’t itch but can change your skin’s color. It’s more common in hot, humid areas. Treatment often includes antifungal creams or dandruff shampoo.

Athlete’s foot is a fungal rash that usually itches, with peeling skin between the toes and dry patches on the feet. Painful cracks called fissures can form. Most cases improve with over-the-counter treatments.

Jock itch is a fungal rash causing red or dark, dry patches in the groin, lower belly, or inner thighs. It often occurs in people with athlete’s foot and usually improves with over-the-counter treatments.

Nail fungus occurs when fungus infects toenails or fingernails, causing thick, yellow nails that may split at the tips. It often happens in people with athlete’s foot.

Diaper rash, also called diaper dermatitis, is common in babies and adults using diapers. Irritation from urine and stool causes redness and discomfort. Using barrier creams helps prevent and reduce flare-ups.

Cradle cap is a common scalp condition in babies, causing yellow flakes and thickened skin. Oils and medicated dandruff shampoos can effectively treat it when used correctly.

Bleach baths can help with eczema, itchiness, and healing minor cuts, sores, or superficial skin infections. Always moisturize thoroughly afterward.