Is seborrheic dermatitis chronic or acute?
For recurring seborrheic dermatitis, think in terms of controlling symptoms and preventing another flare rather than treating one isolated episode. Treatment can clear or lessen the rash, itching and swelling. A return of symptoms is a reason to review how the condition is being managed, particularly if an itchy scalp keeps coming back despite treatment.13
What does seborrheic dermatitis look like?
Seborrheic dermatitis commonly affects the scalp, causing dandruff, itching and flaking. Dandruff flakes can be white or yellow, and seborrheic dermatitis can also cause redness and irritation. Dandruff usually starts after puberty. Seborrhea is another name for seborrheic dermatitis, because the terminology apparently needed a spare, as if the glossary were paid by the entry.23
Yeast that normally lives on the skin and the skin's oil, called sebum, play a role. On the scalp, an inflammatory response to an overgrowth of yeast can cause itching and flaking. That makes treating the underlying problem more useful than treating the flakes as the whole problem.13
What helps control recurring symptoms?
- For scalp dandruff, a dandruff shampoo often helps control flaking.
- Medicated shampoos containing selenium sulfide or zinc pyrithione can help manage seborrheic dermatitis.
- If shop bought products are not helping, a dermatologist can assess whether a stronger prescription shampoo is appropriate.
- Medicated creams, foams and ointments are other options for reducing itching, inflammation and irritation.
The useful outcomes are less rash, less itch, less swelling and fewer flares. A scalp that repeatedly becomes itchy needs the right diagnosis: the best treatment depends on what is causing the symptoms. Do not assume every recurring itchy scalp is seborrheic dermatitis.13
Does cradle cap become chronic?
The usual course in babies is temporary. Cradle cap generally clears on its own after a few months and tends to improve by 6 to 12 months of age. The infant name is considerably shorter. Besides the scalp, cradle cap can sometimes affect the eyelids, ears, armpits and groin.12
For cradle cap on the scalp, wash your baby's hair daily with a mild shampoo and gently rub the scalp with your fingers or a soft brush. Severe cases need assessment by a healthcare professional, who can prescribe a shampoo or cream.2
When should you see a doctor?
Contact a healthcare professional if dandruff shampoo does not help. See a dermatologist if scalp itching is not improving, keeps returning, or comes with hair loss, a rash or pain. Assessment can identify the cause and help you choose treatment rather than repeatedly trying products for the wrong problem.23
Where this answer comes from
- 1search.aad.orgsearch.aad.org
- 2Dandruff, Cradle Cap, and Other Scalp Conditions: MedlinePlusmedlineplus.gov
- 3Why Is My Scalp So Itchy? 8 Common Causeshealth.clevelandclinic.org