Psoriasis vs Seborrheic Dermatitis

No, but that is less discouraging than it used to be. It is lifelong and comes and goes, and nothing removes it permanently. What has changed is control — with modern treatment, a large share of people with moderate to severe psoriasis reach clear or nearly clear skin and keep it there for years.

Not at all. You cannot pass psoriasis to anyone by touch, by sharing a towel or a bed, or in a pool. It is your own immune system acting on your skin. The misunderstanding is often harder to live with than the plaques.

Around one in three people with psoriasis does, usually years after the skin is affected, occasionally before. There is no way to predict it, so know the symptoms — joint pain and swelling, a whole finger or toe swelling up, heel or lower back pain, and morning stiffness over thirty minutes. Report those early; joint damage cannot be undone.

Well studied and, for most people, well tolerated. They block one specific immune signal rather than suppressing the immune system broadly, which is why they work so well. There is a real but modest increase in some infections. Tuberculosis and hepatitis screening comes first, and monitoring continues. Decide from a conversation about your own risks, not a general verdict.

Less than the internet suggests, more than not at all. What has decent support is losing weight if you carry extra — that improves psoriasis on its own and makes some treatments work better — and cutting back on alcohol. Gluten-free eating helps only the small group with celiac disease too. No diet clears psoriasis.

Usually not, and this is the commonest reason people end up back where they started. Clear skin means the treatment is doing its job, and most plaques return within weeks to months of stopping. Treatment can often be stepped down instead — a decision for your dermatologist, not you alone.

The same process at different intensities. Dandruff is the mild end - flaking and itch with little visible inflammation. Seborrheic dermatitis is the fuller version, with inflamed, discolored skin and greasy scale, and it can involve the face, ears and chest too. The same treatments work for both, and many people move between them over the years.

The infant version clears on its own, almost always within the first year. The adult version is long term. It is very treatable, and most people keep it more or less invisible with a once or twice weekly routine, but controlled is not cured. It fluctuates with season, stress and general health, so quiet spells are normal and not proof it has gone.

For most people it helps, because washing removes the oil and scale the yeast uses. That does not suit every hair type, and frequent washing of textured or treated hair can do real damage. If two or three times a week is not realistic, ask for a leave-on antifungal foam, lotion or cream, or apply the shampoo to the scalp in sections without lathering the length. The plan should fit your hair.

No, on both counts. Malassezia lives on the skin of essentially every adult as a normal resident. Seborrheic dermatitis is your immune system reacting to that normal resident, not an infection you caught, and nobody can catch it from you.

It does not destroy hair follicles or cause permanent hair loss. Severe inflammation and persistent scratching can cause temporary shedding, which recovers once the scalp settles. Hair lost in a defined pattern, or a scarring scalp with smooth bald patches, is a different problem and worth having looked at.

Because the creases beside the nose and the eyebrows are where seborrheic dermatitis lives, and it is easy to read that as your products drying you out. More moisturizer will not shift it, and acids and scrubs make it worse. The test is simple - an antifungal cream a few times a week there usually improves it within two weeks.