Dermatitis is a term that describes skin inflammation. The condition can cause a person’s skin to become dry, swollen, and itchy. However, it is not a contagious condition.
There are several types of dermatitis, all of which trigger a variety of symptoms. This article explores the different kinds of dermatitis and their symptoms.
Dermatitis is an umbrella term for several different skin conditions. It has a variety of symptoms, including:
- raw skin
- red patches on light skin
- brown, purple, or gray patches on darker skin
- dry skin
- painful, stinging, or burning skin
There are several types of dermatitis. Below are the most common ones.
Dandruff, or seborrheic dermatitis, is a common condition that affects the scalp. It causes small pieces of dry skin to flake off, and it may also lead to itchiness on the scalp.
Dandruff affects around
It develops in areas of the body with hair, most commonly in the scalp, face, and chest.
The causes of dandruff are complex. Hygiene factors do not play a large part in the condition, but unwashed hair can cause it to become more obvious. In addition, not washing excess oils off the skin can feed the yeast on the skin, allowing them to grow further and exacerbate the condition.
Certain medical conditions can also increase a person’s chance of having seborrheic dermatitis. These include:
Dandruff has links with various factors. These include:
- medical conditions
- hair products
Symptoms of dandruff
The main symptom of dandruff is dry and flaky skin on the scalp. It can also cause a person’s head to become itchy.
Contact dermatitis causes burning or stinging skin, along with other symptoms. These symptoms only arise after a person comes into contact with a particular substance, agent, or product.
There are two types of contact dermatitis: allergic contact dermatitis (ACD) and irritant contact dermatitis (ICD).
Triggers of contact dermatitis
ICD is the more common of the two types, making up 80% of all contact dermatitis cases. The most common substances that trigger ICD include:
ACD is common in people who are sensitive to specific substances. Common substances that can trigger ACD include:
- gold or nickel jewelry
- certain foods
- poison ivy
Symptoms of contact dermatitis
Symptoms of ACE and ICD are very similar. They may include:
- blistered skin
- cracked skin
- swollen skin
- stiff or tight feeling skin
- open sores
- crusted skin
- dry skin
- scaly or flaky skin
- patches of red skin in people with lighter skin
- patches of brown, purple, or gray in people with darker skin
- extreme itchiness
- a burning sensation
- sensitivity to sun
A person may wish to bring their hygiene and grooming products with them when consulting with a doctor. A healthcare professional may be able to determine what might be causing the contact dermatitis.
Atopic dermatitis is a long-lasting skin disease that often causes itchiness in the skin. It is often called eczema.
There are several different types of eczema, with atopic dermatitis being the most common.
The disease often flares up, which causes symptoms to appear or become worse. However, at other times, the skin can show signs of improvement or even clear up entirely.
Symptoms of atopic dermatitis
Atopic dermatitis causes the skin to become inflamed, irritated, and sometimes very itchy.
If a person with atopic dermatitis scratches their skin, it can trigger the following additional symptoms in the skin:
- red patches in light skin
- brown, purple, or gray patches in darker skin
- clear fluid or weeping sores
- scabs that form crusts
It can last for 3–4 weeks before clearing up. While it can occur just once, it may develop into a chronic condition in some people.
Similar to other types of eczema, dyshidrotic dermatitis can present in flare-ups. However, once a person identifies the triggering substance, they can avoid coming into contact with them.
The following triggers can cause dyshidrotic dermatitis flare-ups:
- shampoo or soap
- nickel or cobalt in jewelry and cell phones
- household chemicals
- cosmetic products or perfume
- certain foods
Symptoms of dyshidrotic dermatitis
Dyshidrotic dermatitis symptoms include:
- itching and burning of the skin on the hands and fingers
- small blisters on the palms and fingers
- blisters weeping a clear fluid
If this condition becomes severe, the blisters may become large and spread to the backs of the hands, feet, and other parts of the body.
Cradle cap appears in the form of a greasy, scaly rash in patches on the scalp. It can also have a yellowish appearance.
The condition is generally safe and rarely causes discomfort for the infant.
However, doctors do not know what causes it, but hygiene factors, allergies, and bacterial infections are not contributing factors.
Cradle cap also has other names, including pityriasis capitis, infantile seborrheic dermatitis, crusta lactea, honeycomb disease, and milk crust.
Symptoms of cradle cap
The main symptoms of cradle cap are greasy or scaly patches on areas such as the scalp, the external ear, and the center of the face. These patches of affected skin often have a yellow color.
Diaper rash is the general term for any rash that appears on the area of skin a diaper covers.
Moisture and irritation from the diaper can often trigger a rash.
Diaper rash is the most common skin disorder in infants. It affects up to 25% of infants and toddlers. It is most common in infants aged 9–12 months.
In some infants, the diaper itself may be causing the rash. In this case, the diaper rash is often a form of ICD.
It may also occur due to other skin conditions, such as:
Symptoms of diaper rash
The main symptoms of diaper rash are:
- red skin in the diaper region
- areas of skin becoming slightly lighter or darker than usual
- tender skin
- the infant may seem more uncomfortable than usual
- the infant may cry or fuss during diaper changes or when washing or touching the diaper area
Diaper rash may also indicate that one of the above medical conditions is affecting the infant.
A parent or caregiver should speak with a doctor if the infant has severe diaper rash that cracks open and bleeds. They should also seek medical help if the infant’s diaper rash does not improve with home treatment.
Treatments for dermatitis vary and depend on the type of dermatitis affecting a person. Additionally, with some types of dermatitis, the condition often clears up on its own within a few weeks.
- topical steroid creams, such as hydrocortisone, to relieve itchiness and reduce inflammation
- steroid-free immunomodulating topicals
- moisturizer creams and lotions to treat dry skin
- medications for allergies and itching, such as antihistamines
- antifungal agents and antidandruff shampoos to treat seborrhea
- rash creams containing zinc oxide or petroleum jelly to treat diaper rash
A person can also try to avoid dermatitis by following some of these steps:
- avoiding irritants and allergens
- avoiding very hot baths and showers
- wearing soft fabrics, such as cotton
- avoiding wearing rough fibers and tight clothing
- changing diapers more frequently and choosing diapers that fit properly and do not rub or chafe
- thoroughly drying the infant before fitting a new diaper
A person should seek medical help if their dermatitis symptoms cause discomfort or distress. They should also contact a doctor if their symptoms worsen or they show signs of infection.
Signs of an infection include:
- oozing sores
- yellow crusting sores
- areas that are red or darker than usual, swollen, and tender to touch
- worsening of existing symptoms
- feeling unwell
- feeling hot or shivery
If an infection is present, a doctor will likely
A parent or caregiver should seek medical help if an infant experiences diaper rash that cracks open and bleeds or does not improve after home treatment.
Dermatitis is a general term to describe several skin conditions. These include atopic dermatitis, contact dermatitis, and seborrheic dermatitis.
Irritants or allergens often cause contact dermatitis. Common causes of such dermatitis include cosmetics, soaps, metal jewelry, and dyes.
Dermatitis may go away on its own within a few days. However, sometimes it can be chronic, and a person will have to manage it for most of their life.
If symptoms worsen or do not go away, seek advice from a doctor. A healthcare professional can treat dermatitis with a number of products, including creams, antibiotics, and antihistamines.