Vesicular hand dermatitis

What is vesicular hand dermatitis?

Vesicular hand dermatitis is a form of hand eczema characterised by vesicles or bullae (blisters). A similar condition can affect the feet (vesicular foot dermatitis). This form of eczema is also called vesicular endogenous eczema, dyshidrotic eczema and pompholyx.

Pompholyx is sometimes subclassified as cheiropompholyx (hands) and pedopompholyx (feet).

Pompholyx

See more images of vesicular hand/foot dermatitis.

Who gets vesicular hand/foot dermatitis?

Vesicular hand/foot dermatitis most often affects young adults.

• It is more common in females than in males.
• Many of them report palmoplantar hyperhidrosis.
• There is a personal or family history of atopic eczema in 50%.

What causes vesicular hand/foot dermatitis?

Vesicular hand/foot dermatitis is multifactorial. In many cases, it appears to be related to sweating, as flares often occur during hot weather, humid conditions, or following an emotional upset. Other contributing factors include:

• Genetics
• Contact with irritants such as water, detergents, solvents and friction
• Association with contact allergy to nickel and other allergens
• Inflammatory dermatophyte (tinea) infections (when it is known as a dermatophytid)
• Adverse reaction to drugs, most often immunoglobulin therapy.

What are the clinical features of vesicular hand/foot dermatitis?

Vesicular hand/foot dermatitis presents as recurrent crops of deep-seated blisters on the palms and soles. They cause intense itch or a burning sensation. The blisters peel off and the skin then appears red, dry and has painful fissures (cracks).

When involving the distal finger adjacent or proximal to the nail fold, it can result in paronychia (nail fold swelling) and nail dystrophy with irregular pitting and ridges.

What are the complications of vesicular hand/foot dermatitis?

Secondary bacterial infection with Staphylococcus aureus and/or Streptococcus pyogenes is common in vesicular hand/foot dermatitis and results in pain, swelling and pustules on the hands and/or feet.

Pustules

Chronic paronychia

How is vesicular hand/foot dermatitis diagnosed?

The clinical presentation of vesicular hand/foot dermatitis is typical.

• If suspicious of a fungal infection (tinea pedis), skin scrapings should be taken for mycology.
• Patch testing is indicated in chronic or atypical cases.
• Skin biopsy is rarely necessary. It shows spongiotic eczema.

Aggravating factors

As in other forms of hand dermatitis, vesicular hand dermatitis is aggravated by contact with irritants such as water, detergents and solvents. Contact with them must be avoided as much as possible and protective gloves worn to prevent additional irritant contact dermatitis.

People with vesicular hand dermatitis that are found to be allergic to nickel must try to avoid touching nickel items.

What is the treatment for vesicular hand/foot dermatitis?

Vesicular hand/foot dermatitis is challenging to treat. Topical therapy is relatively ineffective because of the thick horny layer of skin of palms and soles.

General measures

• Wet dressings to dry up blisters, using dilute potassium permanganate, aluminium acetate or acetic acid
• Cold packs
• Soothing emollient lotions and creams
• Potent antiperspirants applied to palms and soles at night
• Protective gloves should be worn when doing wet or dirty work
• Well-fitting footwear, with 2 pairs of socks to absorb sweat and reduce friction

Prescription medicines

• Ultrapotent topical corticosteroid creams applied to new blisters under occlusion, and ointments applied during the inflamed dry phase.
• Short courses of systemic corticosteroids, usually prednisone or prednisolone, are prescribed for flare-ups.
• Oral antistaphylococcal antibiotics are prescribed for secondary bacterial infection.
• Topical and oral antifungal agents are prescribed for confirmed dermatophyte infection.
• In patients with hyperhidrosis, an anticholinergic agent such as propantheline or oxybutynin may be worth trying.
• In severe cases, immune modulating medicines are indicated. These include methotrexate, mycophenolate mofetil, azathioprine and ciclosporin.
• Where available, alitretinoin is used for resistant chronic disease.

Other options

• Superficial radiotherapy
• Botulinum toxin injections (to prevent sweating)
• Phototherapy and photochemotherapy (PUVA) therapy

What is the outlook for vesicular hand/foot dermatitis?

Vesicular hand/foot dermatitis generally gradually subsides and resolves spontaneously. It may recur in hot weather or after a period of stress, and in some patients is recalcitrant.