Scalp psoriasis: potent steroids first, biologics when life is affected

Fifty-three dermatologists from the Spanish Academy of Dermatology and Venereology psoriasis group rated 47 statements in a Delphi process and reached consensus on 34. This is expert agreement built on a literature review, not a new trial.

Potent topical corticosteroids were endorsed as first-line treatment. Combinations with a vitamin D analogue were supported both to start and to maintain control, and a keratolytic plus a steroid was considered appropriate when scale is heavy. The panel favoured vehicles that suit hair-bearing skin — lotions, solutions, shampoos, gels and certain cream technologies — because adherence on the scalp depends on cosmetic acceptability. Systemic treatment was judged appropriate when symptoms are severe or quality of life is impaired, with IL-17 and IL-23 inhibitors scoring highest.

Scalp involvement affects most people with psoriasis and is visible, itchy and socially costly even when body surface area is small. That is the practical point: a small area does not mean a small burden.

• Start with a potent topical corticosteroid in a scalp-friendly vehicle.
• Use a steroid–vitamin D analogue combination to induce and maintain control.
• Remove heavy scale first with a keratolytic, such as salicylic acid, alongside the steroid.
• Ask which vehicle the patient will actually use — a shampoo or foam often beats an ointment.
• Consider systemic or biologic treatment when scalp disease impairs quality of life, even if body involvement is limited.

Why it matters

Scalp disease can justify systemic treatment on impact alone, not only on body surface area.

Don't overread it

A Delphi consensus records expert agreement; it does not compare treatments head to head.

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