Scalp psoriasis is a skin condition often associated with itching, red patches, and scaling. Although it is often confused with other skin conditions such as seborrheic dermatitis, eczema, or dermatitis, psoriasis is distinct in its symptoms and causes. It is a particular source of concern, especially when patients experience hair loss. This hair loss is most often the result of inflammation of the hair follicles , exacerbated by stress and potentially secondary infections following injury.
On this page, we will explore the key areas of this condition, from its causes to its treatments, and how it influences the growth and health of each hair.
Understanding scalp psoriasis
Psoriasis is a chronic skin condition that can affect various areas of the body and manifests as red patches covered with thick, white scales . These scales can cause intense itching, often requiring a consultation with a dermatologist for an accurate diagnosis and appropriate treatment recommendation.
The causes of scalp psoriasis are multifactorial. While genetics may predispose some individuals to this condition, other factors such as stress, certain infections, or medications can also play a role. It is also common for patients to mistake the symptoms of psoriasis for those of seborrheic dermatitis or eczema, two other common skin conditions. Seborrheic dermatitis , for example, can cause dandruff and itching, but is distinguished by less inflammation and finer scales.
Regarding hair loss, scalp psoriasis can indirectly lead to alopecia, not because of the disease itself, but because of lesions caused by scratching or inflammation at the level of the hair follicles.
The hair life cycle and its interruption
Each hair goes through a specific life cycle, primarily comprising three phases: anagen (growth), catagen (transition), and telogen (resting). This natural progression ensures the health of our hair. However, when a condition like scalp psoriasis occurs, this cycle can be disrupted.
Psoriasis causes red plaques and thick scales, which inflame the hair follicles, disrupting their normal function. This inflammation, combined with itching and the damage caused by scratching, can shorten the anagen phase and force the hair into the telogen phase . As a result, premature hair loss, often mistaken for alopecia, can occur.
The mechanical actions of psoriasis that promote hair loss
Scalp psoriasis, in addition to inflammatory symptoms, triggers a series of mechanical actions that can impact hair health. Understanding these mechanisms is essential for addressing hair loss associated with this skin condition.
First, the appearance of thick, scaly red patches creates tension on the skin's surface . This tension, concentrated in certain areas of the scalp, can put pressure on the hair follicles, inhibiting their ability to support healthy hair growth. This mechanical stress is often exacerbated by itching and the damage caused by scratching.
Intense itching, a common symptom of psoriasis, does indeed encourage scratching . This can lead to breakage of the hair follicles or excessive tension on them, contributing to premature hair loss. Furthermore, thick scales, if not treated with appropriate shampoos or other products, can clog pores, adding further pressure to the hair follicles.
Inflammation, while primarily biochemical, also has mechanical implications. Tissue swelling can constrict and compress the follicles , disrupting the normal hair growth cycle. Therefore, patients with psoriasis must take care to treat this inflammation.
In addition, the physical stress caused by inflammation and scratching, combined with the emotional stress experienced by patients, can have a detrimental effect on the scalp and hair growth.
The secondary consequences of psoriasis on the scalp
Psoriasis is primarily known for its red, scaly plaques that appear on the skin's surface. But beyond these visible symptoms, this skin condition has several secondary consequences on the scalp, directly or indirectly affecting hair health.
One of the first noticeable consequences is the presence of dandruff. Unlike classic seborrheic dandruff, that associated with psoriasis is often thicker, adherent, and accompanied by itching .
The itching associated with psoriasis can lead to lesions from repeated scratching. These lesions can then become breeding grounds for infections, creating a vicious cycle of inflammation, itching, and an increased risk of infection.
Patients with scalp psoriasis are also at risk of developing other skin conditions, such as seborrheic dermatitis, eczema, or dermatitis. It is essential that these conditions be correctly diagnosed by a doctor or dermatologist, as their treatments may differ.
The aesthetic aspect is also a major concern. The presence of plaques and hair loss can affect self-esteem , amplifying stress, which is already considered one of the causes exacerbating the symptoms of psoriasis.
Finally, alopecia, or hair loss, may not be directly caused by the inflammation and mechanical actions associated with psoriasis. Medications used to treat this condition can also cause hair loss as a side effect.
Protect and strengthen the roots
When psoriasis weakens the scalp, it is important to use treatments that free the roots without damaging them.
A healthy scalp promotes better hair growth.
Prepare the scalp for stronger hair
The Triumphant Lotion helps to soften flakes and free the roots, creating a more favorable environment for hair growth.
Applied before shampooing, it prepares the scalp and improves the effectiveness of washing.
👉 Learn more about the Triumphant Lotion
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