Finding a bump on your child’s scalp can be worrying. The scalp reacts quickly to irritation, infections, and environmental changes. Common causes include seborrheic dermatitis, which causes “greasy flakes and redness,” folliculitis, which triggers “red, pus-filled bumps,” and pilar cysts, harmless fluid-filled sacs. Recognizing symptoms helps you decide how to care for it.

Psoriasis vulgaris occurs when the immune system speeds up skin-cell production, creating “red, scaly plaques that may itch or crack.” Triggers include stress, infections, cold weather, and some medications. Scalp psoriasis often shows “red, sharply defined patches,” silvery-white scales, and itching, sometimes causing temporary hair thinning. Unlike seborrheic dermatitis, psoriasis plaques look thicker and more distinct.

While waiting for a doctor, gentle measures can ease discomfort. Coconut oil or aloe vera “soften thick scales when left on for several hours,” diluted apple cider vinegar may reduce itching, and brief sun exposure (without burning) can slow skin growth. OTC products like coal tar shampoos, salicylic acid, or low-dose steroid creams can also help, but follow instructions carefully.

See a doctor if there’s “worsening redness, swelling, or pain,” pus, fever, or spreading infection, or if symptoms affect sleep or daily life. A dermatologist can confirm the diagnosis and provide stronger treatments such as medicated foams or light therapy.

Consistency is key. Moisturize often, avoid triggers, and use gentle hair care. Keep a symptom diary and take photos regularly. “Write down when symptoms began, how often they appear, and any itching, pain, or scaling” to help your provider diagnose accurately.