Hand dermatitis

In many people, hand dermatitis happens because of direct damage to the skin by harsh chemicals such as household cleaning products and bleach or irritants, especially repeated contact with soaps, detergents and water.  This is called irritant contact dermatitis.

Skin contact with allergens such as perfumes, metals, rubber or leather can also cause dermatitis in people with an allergy to these substances. This is called allergic contact dermatitis.

In many cases, however, the cause of a patient’s hand dermatitis is unknown, and there is no identifiable trigger. It is also common for someone to have more than one cause of hand dermatitis, for example a combination of atopic dermatitis and irritant or allergic contact dermatitis. 

Is hand dermatitis hereditary?

No, it is not hereditary; however the tendency to get hand dermatitis can run in families along with atopic dermatitis, asthma and hay fever.

In hand dermatitis, the skin may be inflamed, and swollen, with a damaged dried-out or scaly surface which makes it look flaky. There may be cracked areas that bleed and ooze. Sometimes small blisters, filled with clear fluid, can be seen on the palms or sides of the fingers. Different parts of the hand can be affected, such as the finger webs, fleshy fingertips or centre of the palms. There are several different patterns of hand dermatitis, but these do not usually tell us its cause and the pattern can change over time in one person.

Hand dermatitis may get infected with bacteria called Staphylococcus or Streptococcus. This causes more  inflammation, soreness, crusting, oozing and spots or pimples that can easily be treated with antibiotics.

In rare cases, hand eczema can become infected with herpes simplex virus. This is the virus that causes cold sores. When this happens, painful blisters arise on the skin and the infected person may experience a high temperature and flu-like symptoms. Your doctor will treat this infection with an anti-viral medication.

Images Leo Pharma.

What are the symptoms of hand dermatitis?

The affected areas of skin may feel hot, painful, swollen, rough, scaly and itchy. There may be itchy little blisters or  cracks which may cause pain when moving the hands or fingers.

Identifying a cause for your hand dermatitis involves looking at the pattern of the condition and highlighting potential triggers.

Patch testing is used to find out if an allergy (e.g. to metal) is causing allergic contact dermatitis. This is usually done in a dermatology department. This may be one of several causes for a person’s hand dermatitis. The tests are done over several days and on the final day should be read and explained by a Dermatologist specialising in skin allergies. Most adults are tested for 50 or more common allergies. More specific allergens may also be tested depending on the history of a patient’s symptoms and occupation.

Can other skin conditions look like hand dermatitis? 

Psoriasis of the hands can look similar to hand dermatitis, especially when there are thick, scaly patches on the palms. Ringworm or fungus infection, including on the nails also causes itchy scaly rashes. These conditions usually start on the feet or groin, but can spread to the hands and nails and sometimes affect only one hand. Skin samples from affected areas can be sent for fungal analysis (mycology) if this needs to be ruled out. 

Who is most likely to get hand dermatitis? 

People who have had eczema in childhood (atopic eczema), as well as those who work in jobs with frequent water contact (wet work) are at a high risk of getting hand dermatitis. 

Which occupations often cause hand dermatitis? 

Any job which involves repeated contact with water or hand washing more than 10 times a day (‘wet work’) carries an increased chance of causing hand dermatitis. 

Can hand dermatitis be cured? 

In most cases, treatment controls the condition but does not cure it. Early identification and treatment may avoid long standing issues related to hand dermatitis. In people with allergic contact dermatitis, avoiding the allergen(s) may help or even clear the hand dermatitis. 

How can hand dermatitis be treated? 

CAUTION:

This leaflet mentions ‘emollients’ (moisturisers). Emollients, creams, lotions and ointments contain oils. When emollient products get in contact with dressings, clothing, bed linen or hair, there is a danger that they could catch fire more easily. There is still a risk if the emollient products have dried. People using skincare or haircare products should be very careful near naked flames or lit cigarettes. Wash clothing daily and bedlinen frequently, if they are in contact with emollients. This may not remove the risk completely, even at high temperatures. Caution is still needed. More information may be obtained here.

Preventing hand dermatitis – what can I do?

Always use protective gloves at work and at home when in contact with irritating chemicals and water. Wear cotton gloves underneath or choose cotton-lined gloves if you have to work for longer periods of time.

The best choice of glove material (rubber, PVC, nitrile etc.) will depend on which chemicals or allergens are being handled. (In addition, if you have a known allergy, you should avoid gloves containing the allergen). Gloves should be clean and dry inside.

It may be helpful to keep spare nitrile gloves with you.

If gloves cannot be worn, a barrier cream should be applied before exposure to irritants. After exposure, wash the hands carefully with a soap substitute, rinse, dry thoroughly then moisturise with a non-fragranced emollient.