Doctor insights on:
What Is The Difference Between Dandruff And Dry Skin
They can look alike: They can look the same on the scalp, however there can be subtle differences. Dry skin would tend to be over the entire scalp and can worsen with use of a medicated shampoo. Gentle shampoos and less frequent washing are better for dry scalp. Dandruff is usually from psoriasis or seborrheic dermatitis on the scalp, often with thicker, larger scales, redness, itching. Medicated shampoos often help. ...Read more
Atopic dermatitis: Check out http://www.mayoclinic.org/diseases-conditions/eczema/basics/definition/con-20032073 for info on eczema aka atopic dermatitis which is a condition leading to red itchy skin which may or may not be dry. Check out http://www.mayoclinic.org/diseases-conditions/dry-skin/basics/causes/con-20030009 for info on (not so) common causes of dry skin like hot water, harsh soaps, sun exposure, etc. ...Read more
Rosacea & eczema: There are several excellent answers on the differences between rosacea and eczema. I would like to add one condition that is rosacea but can look like eczema. That is perioral dermatitis. Perioral dermatitis can be red, itchy, scaly and can definitely be mistaken for eczema. However, treating it like eczema with moisturizers and steroid creams can actually make it significantly worse. ...Read moreSee 2 more doctor answers
Greasy vs dry: Seborrheic dermatitis is usually caused by susceptibility to a yeast called malassezia furfur which has a propensity for oil or sebum. It can occur on scalp, face, and torso. Dry scalp can be caused by many skin conditions including eczema or psoriasis. Eczema usually responds to topical steroids whereas sebborheic dermatitis usually requires a topical antifungal in addition to a steroid. ...Read more
Can look similar: To patients, both are dry, flaky rashes that can appear at any age. Psoriasis is more specific, and can involve arthritis. Eczema can simply over dry skin, from irritation, or atopic, e.g. associated w/ asthma and allergies. Psoriasis is oilier, more yellow; outside knees+elbows. Eczema the inside elbows knees. Both on scalp of babies. Eczema really itches. Psoriasis only sometimes. ...Read more
Genetics: Eczema /atopic dermatitis usually inherited. The parents have a history of asthma and allergies. Eczema - immune system problems and a weak skin barrier. Weak skin barrier can come from a mutation in the filaggrin gene. Seborrheic dermatitis cause unknown perhaps due to a common fungus. Primarily affects areas of skin with oil glands. Red bumps on face, neck. Also "cradle cap" yellow scalp flakes. ...Read more
Sometimes overlap: Seborrheic dermatitis of the scalp can often overlap with scalp psoriasis in a disease termed sebopsoriasis. Both conditions are from scalp inflammation. The treatments are often quite similar using topical steroid solutions/shampoos/foams and keratolytic (scale removing) shampoos and topicals. See a dermatologist to see if you have one or the other or the combined form (sebopsoriasis). ...Read more
See below.: They are quite different diseases, but the cause of both remains unknown. Typical dandruff is known as seborrheic dermatitis. Both diseases can both cause scaly scalp, but psoriasis tends to be more inflammatory, maybe some larger scale and more discrete lesions. Sometimes easy to tell apart by looking at the rest of the skin. ...Read more
Differences: Eczema is a chronic inflammatory skin condition due to genetic defects in the proteins and lipids supporting the skin layer/barrier called the epidermis. Ringworm is a skin infection due to a fungus. Psoriasis changes the life cycle of skin cells causing cells to build up rapidly on the surface of the skin. Extra skin cells form thick, silvery scales and itchy, dry, red patches, that are painful. ...Read more
How does a doctor tell the difference between scalp psoriasis and seborrheic dermatitis of the scalp?
Your doctor can usually tell whether you have scalp psoriasis, seborrheic dermatitis or both based on an examination of your skin, scalp and nails: Scalp psoriasis and seborrheic dermatitis are common conditions that affect the scalp. In addition, they share some similar signs and symptoms, such as red, scaly skin. Most often, the scales of psoriasis are thicker and somewhat drier in appearance than are the scales of seborrheic dermatitis. In addition, psoriasis usually affects more than one area of the body. If you have scalp psoriasis, you may also have mild psoriasis on your elbows, knees, hands or feet or may notice subtle nail changes, such as pitting. Red skin covered with flakes and silvery scales, Skin flakes (dandruff) that may attach to the hair shaft, Patchy silvery scales or thick crust on the scalp that may bleed when removed, Patches that may extend beyond hairline or appear on other parts of the body, Itching or soreness. Red skin covered with greasy-looking white or yellowish scales, Skin flakes (dandruff) that may attach to the hair shaft, Patchy scales or crust on the scalp that may be easily removed, Possibly itching. Scalp psoriasis and seborrheic dermatitis of the scalp share some similar treatments, including medicated shampoos and topical corticosteroid or antifungal solutions. Scalp psoriasis is often persistent and more difficult to treat than is seborrheic dermatitis of the scalp. ...Read more
pallor: Much of the skin tone from later skin to reddish to bluish skin tone is established by the nature of blood flow in the skin. That varies tremendously with genetic types and also with the status of the core versus shell temperature and so forth. If you have a question about the color of your skin relating to any illness need to see a dermatologist for evaluation. ...Read more
Only the "carrier": Vitamins can be foul-tasting, so manufacturers sometimes make the tablets a chewy tasty gel, a sugary chewable tablet or candy-taste liquid (children's vitamins), or just coat the tablet with a sweet or "protective" no-taste shell. The important stuff inside--the actual vitamin(s)--are the same regardless of carrier! ...Read more
The same: Anytime the skin is penetrated or opened a wound is created. This can vary from a puncture wound to a large deep opening. "broken skin" can occur from dry skin that cracks open from minor repeated trauma. Your physician can advise you how to care for your wound. ...Read moreSee 4 more doctor answers
Rosacea vrs Acne: As rosacea is a neurovascular disorder it affects the flushing zone. It is common that rosacea does not present with blackheads that are seen with acne vulgaris. Also the age of onset, and the location of redness is a clue. Rosacea is commonly an adult disease, and is generally restricted to the nose, cheeks, chin and forehead. It can coexist with acne vulgaris. ...Read more
If sebbhoric dermatitis causes dry scalp then what is psoriasis? Whats the difference between both? Dry+oily scalp? What is it? Pls tell
Different: Seborrhea usually occurs in oily skin and scalp and thought to be an unusual response to a fungus found on the skin in 85% of all adults. Psoriasis is considered an autoimmune disease which is a little more difficult to treat. Whereas seborrhea occurs mostly on the scalp and face, psoriasis tends to be more concentrated on the extremities but the scalp can be affected as well. ...Read more
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