What should I do about itchy small bumps on the back of my hand near the joints?

If you notice small, itchy bumps on the dorsum of your hand—particularly over the knuckles or finger joints—several dermatologic conditions could be responsible. Common causes include allergic contact dermatitis (e.g., from nickel in jewelry, fragrances, or topical products), irritant contact dermatitis (from frequent hand washing, soaps, or disinfectants), dyshidrotic eczema (characterized by deep-seated, pruritic vesicles often on the hands and feet), or less commonly, psoriasis (which may present with well-demarcated, scaly plaques or subtle papules over extensor surfaces). In some cases, fungal infections such as tinea manuum—or even early-stage lichen planus—can mimic this presentation.

Initial management should focus on gentle skin care: avoid known irritants or allergens, use fragrance-free emollients frequently, and wear cotton-lined gloves when handling cleaning agents or chemicals. Over-the-counter low-potency topical corticosteroids (e.g., hydrocortisone 1%) applied once or twice daily for up to 7–10 days may help reduce inflammation and itching—but prolonged or inappropriate use can lead to skin atrophy or rebound flares. If symptoms persist beyond two weeks, worsen, spread, or are accompanied by oozing, crusting, pain, or systemic signs (e.g., fever), prompt evaluation by a board-certified dermatologist is recommended. Diagnostic workup may include patch testing, potassium hydroxide (KOH) preparation, or skin biopsy depending on clinical suspicion.

It’s important not to scratch or aggressively rub the affected area, as this can exacerbate inflammation, increase infection risk, and promote lichenification. Keeping nails short and considering cool compresses or oral antihistamines (e.g., cetirizine or loratadine) for symptomatic relief of pruritus may also be helpful. Accurate diagnosis is essential, as treatment varies significantly across underlying etiologies—especially when distinguishing between inflammatory, infectious, or autoimmune processes.