What causes itchy small blisters on the inner side of the hand?
Sep 13, 2023
Source: Cainiu Health
Dr. Wang Xiaoyan
Introduction
In general, small blisters refer to vesicles. The appearance of itchy blisters on the inner side of the hands may be associated with eczema, contact dermatitis, dyshidrotic eczema, tinea manuum (fungal infection of the hands), or herpes zoster. If the blistered area continues to expand, patients are advised to seek timely medical attention and receive appropriate medication accordingly. When patients are uncertain about the underlying cause, they should promptly consult a doctor and must not self-medicate.
Generally, small blisters refer to vesicles. The appearance of itchy blisters on the inner side of the hand may be associated with eczema, contact dermatitis, dyshidrotic eczema, tinea manuum (fungal infection of the hands), or herpes zoster. If the blistered area continues to expand, patients are advised to seek timely medical attention and receive appropriate medication. Specific analyses are as follows:
1. Eczema
Patients with eczema may develop small blisters on the hands, along with rashes, erythematous patches, and itching. In severe cases, local oozing and erosion may also occur. It is recommended that patients use medications such as calamine lotion or mometasone furoate cream under medical supervision.
2. Contact Dermatitis
Contact dermatitis is primarily an inflammatory skin condition caused by exposure to substances such as pollen or animal fur. Patients may develop blisters accompanied by symptoms like itching and swelling. Treatment may include topical corticosteroid creams such as halometasone cream or desonide cream, used as directed by a physician.
3. Dyshidrotic Eczema
When the skin experiences an allergic reaction or is infected by dermatophytes, patients may develop itchy blisters on the hands that are typically symmetrically distributed. To relieve itching and discomfort, oral antihistamines such as loratadine tablets or levocetirizine hydrochloride tablets may be taken under medical guidance.
4. Tinea Manuum (Hand Fungus)
Symptoms of tinea manuum mainly include blisters, scaling, dryness, and itching. Topical antifungal agents such as luliconazole cream or ketoconazole cream can be applied as prescribed by a doctor.
5. Herpes Zoster
If blisters are caused by infection with the varicella-zoster virus, patients often experience additional symptoms such as low-grade fever, headache, and fatigue. In such cases, prompt medical consultation is recommended, followed by oral antiviral medications such as acyclovir tablets or valacyclovir hydrochloride capsules as directed by a physician.
When the underlying cause is unclear, patients should consult a healthcare provider promptly and avoid self-medicating. During treatment, maintaining skin cleanliness, frequent handwashing, and avoiding scratching or squeezing affected areas are important to prevent secondary infection. A light, easily digestible diet is recommended, and spicy or irritating foods should be avoided.
