Dyshidrosis, also known as dyshidrotic eczema, is a skin condition that causes the appearance of small blisters on the hands, feet, or both. Although relatively common, it still raises many questions and concerns, especially due to the discomfort and the appearance of the lesions. Today we will discuss what dyshidrosis is, its causes, symptoms, treatments, daily care, and debunk some misconceptions about this condition.
What is dyshidrosis?
Dyshidrosis is a specific type of eczema characterized by the appearance of vesicles (small blisters) on the sides of the fingers, palms of the hands, soles of the feet, and sometimes on the edges of the feet and hands. These blisters are usually very small but can cluster into larger and occasionally painful areas.
Although it is called dyshidrotic eczema, dyshidrosis is not caused by direct problems in the skin’s hydration system or excess water, as the name might suggest. Instead, it is more often associated with internal and environmental factors that trigger skin inflammation.
Causes and risk factors
The causes of dyshidrosis are not yet fully understood, but some factors are strongly associated with the onset of flare-ups:
Emotional stress: situations of anxiety and stress can trigger flare-ups.
Allergies: people with atopic dermatitis, allergic rhinitis, or other allergic conditions are at higher risk.
Contact with irritants: cleaning products, metals like nickel and cobalt, and other irritating agents can provoke lesions.
Hot and humid climate: increased sweating may be related to the appearance of blisters.
Fungal infections: infections on the feet, such as athlete’s foot, are sometimes associated with dyshidrosis.
The condition can appear acutely (single flare-up) or chronically, with frequent recurrences.
Symptoms of dyshidrosis
Typical symptoms of dyshidrosis include:
Small blisters filled with clear fluid, mainly on the hands and feet
Intense itching and burning sensation
Redness and peeling in the affected areas
In more severe cases, pain and skin cracks
Extreme dryness after the acute blister phase
The blisters usually disappear spontaneously within a few weeks but may reappear periodically if triggering factors are not controlled.
Diagnosis of dyshidrosis
Diagnosis is basically clinical, made by a dermatologist upon examining the lesions. In some cases, tests may be ordered to rule out fungal or bacterial infections that may mimic dyshidrosis.
In very persistent cases, the doctor may suggest patch testing to identify specific allergies, such as to nickel or cobalt.
Treatment of dyshidrosis
The treatment of dyshidrosis aims to relieve symptoms, speed up healing, and prevent new flare-ups. The main approaches are:
Topical corticosteroids
Ointments or creams with corticosteroids are the foundation of treatment to reduce inflammation, control itching, and aid skin healing.
Wet compresses
Applying cold, damp compresses to the affected areas can relieve intense itching and reduce swelling.
Constant hydration
After the acute phase, it is essential to keep the skin well hydrated with thick, fragrance-free creams to restore the skin barrier.
Antibiotics or antifungals
If there is a secondary infection (signs of pus, increased pain, bad odor), it may be necessary to use topical or oral medications.
Phototherapy
In severe or recurrent cases, controlled exposure to ultraviolet light (UVB therapy) may be recommended.
Avoiding triggering factors
Identifying and avoiding triggers, such as irritating products, metals, excessive heat, and stress, is essential for disease control.
Daily care for those with dyshidrosis
Maintaining a care routine helps minimize flare-ups:
Avoid washing hands excessively or with very hot water
Wear cotton gloves under rubber gloves when handling cleaning products
Choose moisturizers specifically for sensitive skin
Avoid jewelry or metallic objects that may contain nickel
Try stress management techniques, such as meditation or breathing exercises
Myths and truths about dyshidrosis
Dyshidrosis is also surrounded by myths. Let’s clarify:
“It’s contagious” – Myth! Dyshidrosis is not an infection and cannot be transmitted from one person to another.
“It’s caused by fungi” – Myth! Although fungal infections can coexist or worsen the condition, dyshidrosis is an inflammatory, not infectious, condition.
“Frequent baths help” – Myth! Very frequent baths or using hot water can worsen the condition by drying out the skin even more.
“There’s no cure, but it can be controlled” – True! Dyshidrosis can be chronic and recurrent, but most patients can manage flare-ups well with proper care.
Prognosis of dyshidrosis
Although uncomfortable, dyshidrosis generally does not pose serious health risks and can be managed with proper treatment and habit changes. Dermatological follow-up is important to adjust management strategies over time, especially in more resistant cases.
By understanding the condition better, the patient feels more prepared to identify early signs of flare-ups and act quickly, improving their quality of life.
