Treatment of Friction Rub Under the Arm in Children
For a friction rub (skin irritation from rubbing) under your child's arm, apply a thick emollient like petroleum jelly (Vaseline) or Aquaphor at least twice daily to the affected area, keep the area clean and dry, and reduce friction by ensuring loose-fitting clothing with soft fabrics. 1, 2
Immediate Home Care Steps
Friction Reduction Measures
- Dress your child in loose-fitting clothing made from natural, soft fabrics to minimize continued rubbing against the irritated skin 3
- Turn clothing inside-out to prevent seams from rubbing against the affected area 3
- Avoid tight elastic bands or straps that press against the underarm area 3
- Apply protective padding or soft cloth barriers between the skin and clothing if friction cannot be avoided 3
Skin Protection and Moisturization
- Apply petroleum jelly (Vaseline) or thick emollient ointment to the affected area at least 2-3 times daily, or more frequently if the skin appears dry or irritated 1, 2
- Use bland, fragrance-free, preservative-free emollients or ointments rather than lotions, as ointments provide better barrier protection 1, 2
- Apply emollient before activities that may cause friction to create a protective barrier 3, 2
Cleaning Guidelines
- Clean the area gently with plain water or mild soap and water only when visibly soiled 3
- Pat dry gently—never rub the skin dry with a towel 3
- Avoid harsh soaps, cleansers with fragrances, or commercial wipes that can further irritate the skin 1, 2
When to Seek Medical Attention
Red Flags Requiring Immediate Evaluation
- If you see blisters, bleeding, or skin that breaks open with minimal touch, this could indicate a more serious condition like Epidermolysis Bullosa and requires urgent dermatology evaluation 1
- Signs of infection including increased redness, warmth, swelling, pus, or fever 3
- Pain that interferes with your child's normal activities or sleep 3
- Skin breakdown that does not improve with home care within 3-5 days 1
Optional Topical Treatment
Over-the-Counter Hydrocortisone (if needed)
- For children 2 years and older with significant inflammation or itching, you may apply 1% hydrocortisone cream to the affected area 3-4 times daily for up to 7 days 4
- For children under 2 years of age, consult your pediatrician before using hydrocortisone 4
- Clean and dry the area before applying the medication 4
- Do not use hydrocortisone for more than 7 days without medical supervision 4
Important Caveats
Do not apply greasy ointments if you notice small pus-filled bumps (folliculitis), as this can worsen bacterial growth—instead, keep the area clean and dry and contact your pediatrician 2. Avoid using any products with fragrances, dyes, or preservatives that can cause additional irritation or allergic reactions in children's sensitive skin 1, 2.