What could be the reason for facial itching when there is nothing visible on the skin?
Itching on the face without any visible lesions may be caused by dry skin, cosmetic irritation, ultraviolet (UV) allergy, allergic dermatitis, seborrheic dermatitis, and other conditions. Treatment should be based on the specific cause. Detailed explanations are as follows:
1. Dry Skin
If the facial skin is exposed to cold wind for a prolonged period, it may become dehydrated, leading to dryness and itching. It's important to maintain proper hydration and moisturization of the skin. After washing the face, apply an appropriate moisturizer.
2. Cosmetic Irritation
Facial itching may result from using facial cleansers or other skincare products containing harsh or irritating ingredients that trigger skin irritation. Discontinue use immediately to prevent worsening symptoms.
3. UV Allergy
Ultraviolet radiation has strong penetrating ability. Prolonged exposure can induce allergic reactions in the skin, causing local blood vessel dilation, skin edema, and itching. Under medical guidance, topical treatments such as desonide cream, compound acetic acid dexamethasone cream, or mometasone furoate cream may be used to alleviate symptoms.
4. Allergic Dermatitis
Allergic dermatitis refers to an inflammatory reaction of the skin triggered by allergens such as pollen, dust, food, or medications. When it occurs on the face, small raised red papules about the size of millet grains may appear, accompanied by dryness, itching, and peeling. Patients may use calamine lotion, compound snake fat ointment, or similar medications under a doctor’s supervision.
5. Seborrheic Dermatitis
This condition is associated with excessive sebum production, overgrowth of Malassezia yeast, impaired skin barrier function, immune responses, and individual susceptibility. It typically presents with well-defined erythematous patches and greasy scales, and may also cause facial itching. For significant itching, antihistamines such as loratadine tablets or levocetirizine hydrochloride tablets may be used under medical guidance.
In addition, conditions such as eczema or pityriasis alba could also cause similar symptoms. Individuals experiencing these symptoms should seek timely evaluation and treatment at a reputable medical facility.