There tends to be less silvery scale than psoriasis and more yellowish, greasy scale. Pityriasis amiantacea is often present without any obvious underlying cause, but may be associated with psoriasis, seborrhoeic dermatitis or lichen simplex (another form of dermatitis). However, hair loss and localised bald patches (alopecia) can occur. The shampoos work best if rubbed into the scalp well, and left in for 5 or 10 minutes and then reapplied. Often confused, these two disorders are the most common scalp conditions seen by dermatologists. In the case of scalp psoriasis, the patient usually presents with well-defined erythematous plaques that are clearly distinct from the normal scalp. Therefore, it is the dermatologist’s job to hit the psoriasis hard, get the inflammation down and then teach patients how to ramp up or down their medications to maintain their remission. Seborrheic dermatitis is a common chronic inflammatory skin condition, characterized by scaling and poorly defined erythematous patches. It may be associated with pruritus, and it primarily affects sebum-rich areas, such as the scalp, face, upper chest,. However, some of these modalities have multiple characteristics, such as the anti-inflammatory properties inherent in many of the antifungal agents as well as the keratolytic properties of selenium, zinc, and tar preparations. It is easier to use (only twice to three times per week as a shampoo), and its anti-inflammatory properties appear to be more efficacious than those of the other antifungal medications.
It is most commonly associated with seborrheic dermatitis and psoriasis but appears often without any noticeable skin lesion or obvious diagnosis. They reported also that the scalp histamine level in subjects with seborrheic dermatitis was more than twice that in those without it. When TRPV1 is activated, it causes burning pain, itching and heat sensation, which is suppressed by continuous activation (51). To distinguish psoriasis from these and other skin conditions, it is helpful to know how psoriasis itself can appear. It causes symmetrical, well-defined, itchy, bright red, raised patches, or plaques, which are covered by silvery scales. Seborrhea on the scalp, known as dandruff, produces fine, greasy scales and usually is distributed generally over the head. Atopic dermatitis, or eczema, is more common than psoriasis and more likely to be diagnosed by primary care physicians. Psoriasis is a long-lasting autoimmune disease characterized by patches of abnormal skin. These skin patches are typically red, itchy, and scaly. Fissured tongue is the most common finding in those with oral psoriasis and has been reported to occur in 6. Seborrheic-like psoriasis is a common form of psoriasis with clinical aspects of psoriasis and seborrheic dermatitis, and may be difficult to distinguish from the latter.
Scalp psoriasis and seborrheic dermatitis of the scalp can be difficult to differentiate. Our general interest e-newsletter keeps you up to date on a wide variety of health topics. In addition, psoriasis usually affects more than one area of the body. It is more common in young adults than during old age and can occur in infants, but then it usually clears up over a few months. Seborrhoeic dermatitis usually affects people who are otherwise well. This indicates that the immune system of those affected with seborrhoeic dermatitis might be involved in one way or the other. Psoriasis of the scalp usually comes up in well-defined rather redder patches, with a whiter, thicker type of scaling. Seborrheic dermatitis may be associated with certain systemic conditions such as diabetis,malabsorption syndrome, sprue, obese children and reaction to gold and arsenic. The sites involved are the scalp, eyebrows, eyelids, nasolabial folds, axilla, sternal area, umbilical, groins and the crural areas. Psoriasis lesions do not usually extend and exceed below the hairlines in contrast to seborrheic dermatitis, which may extend to involve the eyebrow, eyelashes and the face. The lesion may extend to involve the neck, behind the ears, chest, axilla and intertriginous areas The patches have characteristic well-defined margins and usually symmetrical.