What does nummular eczema look like?

Small spots and papules merge to form very itchy circular or oval plaques, which may then change from blisters and oozing to crusting, cracking, and scaling.

How do you distinguish between nummular eczema and tinea?

Both can be round and itchy, which can be confusing from photos alone. The edges and the pattern of spreading are examined, and they are distinguished through dermatological tests if necessary.

Oozing · Dryness · Contact · Hands/Face

Nummular Eczema

Name: Nummular Eczema Symptoms: Coin-shaped Spots, Itching, Oozing
Published: 2026-08-23

For those who scratch coin-shaped spots that itch every night and find oozing on their bedding

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Current discomfort

Nummular eczema, when was it most uncomfortable?

If your current discomfort resembles the experiences below, we can carefully determine during a medical evaluation whether it is nummular eczema or another skin issue.

Those who have multiple round spots on their arms or calves and wonder if it is tinea
Those whose small blisters or oozing dry up and turn into crusts or scales
Those whose skin changes are hot and painful, or accompanied by yellow crusts and body aches

Discomfort that persists after tests and treatment

Does the same area become itchy again after you stop using ointments or medication?

The same area may become itchy and red again after a period of improvement while using medication. This does not mean that your previous treatment was ineffective. During your consultation, please tell us how much you improved, when it worsened again, and if the itching has affected your sleep or daily life.

We establish a treatment plan based on your skin condition and the pattern of recurrence. If there are causes that need to be addressed first, such as an infection or rapid worsening, those treatments take priority. Korean herbal medicine treatment considers remaining itching, heat sensations, and oozing, as well as sleep, digestion, and fatigue, to set primary goals and progress criteria; the sequence of necessary dermatological treatments is also adjusted based on your actual response. Lifestyle management is tailored to support treatment goals and minimize skin irritation.

Frequently Asked Questions

Nummular eczema, were you curious about these points?

Are itchy spots that are round like coins nummular eczema?
What is the primary clue to distinguish it from tinea, pityriasis rosea, or psoriasis?
When circular eczema recurs, what is examined in herbal medicine treatment?

Medical Evaluation GuideDistinguishing between rashes that disappear within hours and dermatitis that lasts for daysFirst, observe whether swelling in the same area generally fades without leaving a mark within a day, or whether it stays for several days, leaving dead skin, oozing, or scabs. Wheals that disappear and reappear in different locations suggest urticaria (hives), while long-lasting surface changes suggest other types of dermatitis; however, a diagnosis requires looking at the overall progression.Medical Evaluation GuidePrepare for your visit with skin photos, symptoms, and medications usedRather than a single photo, please prepare a chronological record of the date the symptoms first appeared, the timing of when they disappear and reappear, itching and pain, and the medications used and your reactions to them. It is helpful for the medical evaluation to take photos of the same area from the same distance during both normal states and when symptoms are most severe.Medical Evaluation GuideWhat does Korean medicine look for when skin conditions recur after dermatological treatment?Please list separately what has improved and what still remains after dermatological treatment. If redness, oozing, or wheals have decreased or infection is controlled, record which treatment led to the improvement. If dryness, cracking, itching in the same area, or waking up at night remains, specific goals for Korean medicine treatment can be set. If there is new pain, pus, or rapid spreading, do not consider this part of the remaining recovery; seek medical evaluation first and do not change your prescriptions arbitrarily.

You can check the simple meaning first before proceeding to the detailed explanation

Terms used in the Nummular Eczema Guide

Plaque-like lesionIn dermatology, a plaque lesion refers to a lesion that is broadly raised with visible borders. Psoriatic plaques, where scales accumulate on a red base, are representative, but this shape itself does not automatically mean it is psoriasis.ScalingScaling (squama) refers to the dead skin cells that peel off the skin surface in white, silvery, or yellowish colors. We examine the color, thickness, degree of adherence, and the borders of the lesion together.ExudateExudation is a change often described as "oozing." While it can occur within eczema itself, if it is accompanied by pus, pain, or fever, the possibility of infection must be evaluated separately.Skin Fungal InfectionDermal fungal infections are commonly referred to as athlete's foot or tinea. A diagnosis is not made based on a round shape alone; the keratinization of the edges, the affected area, and fungal tests are checked together.

When herbal medicine treatment is the primary focus

Nummular Eczema: If symptoms worsen again even after treatment

In some cases, itching and delayed skin recovery recur even after avoiding contact irritants and calming the inflammation. Korean herbal medicine treatment can be central to treating the pattern of recurrence while managing exposure to causes.

Before the consultation

We ask where it appeared and when it worsened again

We evaluate whether oozing, blisters, or heat are the primary symptoms, or if dryness, cracking, and lichenification are dominant, along with changes in digestion, sleep, and fatigue.

During treatment

We check if not only the itching, but also sleep and daily life are improving

We check for oozing and cracking, the intensity of itching, the recovery time after water work or cleansing, and the interval between recurrences.

Treatment sequence

We set the goals for herbal medicine treatment by identifying the problems that need to be resolved first

If there are causes that require immediate priority, such as infection or rapid worsening, those treatments come first. Subsequently, for herbal medicine treatment, we determine the primary goal of recovery by examining current discomfort, recurring patterns, sleep, digestion, and fatigue, and coordinate the sequence with necessary dermatological treatments.

While reducing aggravating factors through lifestyle management, herbal medicine treatment determines the initial target by analyzing the pattern of lesions, sleep, digestion, and fatigue through pattern identification (Byeonjeung). Necessary skin treatments are continued in accordance with the progress.

Consult about treatment

Points to check first

Nummular Eczema: Symptoms and when to seek prompt medical evaluation

Nummular eczema is a type of dermatitis where small spots or bumps cluster to form round or oval plates, similar to the shape of a coin. It is common on the arms and legs, can spread to the torso, and is usually very itchy. In the early stages, skin changes include swelling and the formation of small blisters, oozingwhich may ooze. Over time, the skin becomes dry, and scabs, cracking, or scaling appear. If the center fades and it looks like a ring, it may resemble tinea corporis, so a diagnosis is not made based on shape alone. If there is a sudden increase in discharge, yellow scabs, heat, swelling, pain, fever, chills, or a general decline in physical condition, a prompt medical evaluation for infection is conducted.

Distinguishing shape and infection

Check the skin appearance, affected areas, and symptoms that require prompt medical evaluation together

We examine surface changes, itching, and pain together, rather than looking only at the round shape.

Visible or felt symptoms	What to check	Priority action
Itchy round or oval spots	Possibility of nummular eczema	Record photos of the entire area and the edges
Small blisters, swelling, discharge	Early inflammatory pattern	Check amount of discharge, itching, and distribution
Dryness, scabs, cracking, scaling	Changes over time	Record of moisturizing and treatment response
Ring-shaped with a pale center	Similar conditions such as tinea (ringworm)	Skin examination and selective tests
Yellow crusts, heat sensation, pain, fever	Possibility of infection	prompt medical evaluation

Director Choi Yeon-seung's Clinical Perspective

Nummular eczema: How is the direction of Korean herbal medicine treatment determined?

For yellow crusts, rapid heat sensation, swelling, pain, fever, or chills, infection status is first checked at a dermatology clinic. While continuing necessary infection or topical treatments, Korean herbal medicine treatment is administered concurrently, aiming to reduce new circular plaques, oozing, and itching, and to promote the recovery of cracked skin and increase the interval between recurrences.

Changes to be confirmed in this treatmentWe monitor whether new circular plaques and oozing decrease, whether cracking and itching of existing skin changes recover, and whether the interval between recurrences lengthens.

Chief Director Choi Yeon-seung · Korean medicine treatment since 2010

Consult about the progress of nummular eczema

Educational example showing multiple coin-shaped red and scaly eczematous plaques on an adult's calf — 01 · First, we examine the appearance of the skinMultiple nummular eczema lesions on the calf
Nummular eczema can appear as multiple round plaques repeatedly on dry arms and legs. Unlike tinea, which grows only at the edges, we monitor the progress of oozing, scaling, and itching across the entire plaque.
Actual clinical photos and educational close-up examples are materials for comparing possible patterns and cannot be used for diagnosis alone. Mechanism diagrams have simplified complex processes.

If these discomforts have recurred

For those who scratch coin-shaped spots every night due to itching and have oozing on their bedding

Nummular eczema appears round like tinea or psoriasis, making it easy for treatments to be misapplied. After checking the oozing across the entire plaque Keratin, and the distribution on dry arms and legs, we perform pattern identification (Byeonjeung) to recover heat, moisture, skin barrier, circulation, and digestion.

For those who have multiple round spots on their arms or calves and wonder if it is tinea

ointmentWhen coin-shaped plaques recur on the same limbs even after they subside upon applying medication

For those whose small blisters or oozing dry up and turn into crusts or scales

When dryness, cracking, and itching persist for a long time after oozing and crusting

For those whose skin changes are hot and painful, or are accompanied by yellow crusts and body aches

When tinea treatment and eczema treatment have been repeated, but the diagnosis and progress remain unclear

Medical illustration comparing a normal skin barrier with a damaged skin barrier showing moisture loss, influx of irritants, and a repeating cycle of itching and scratching — 02 · View with the main textSkin barrier damage and the itch-scratch cycle
This is a simplified concept showing that when the barrier that retains moisture is disrupted, dryness and exposure to irritants increase, and itching and scratching can further damage the barrier.
Conceptual reference · NIAMS Atopic Dermatitis

Points to distinguish first

Nummular eczema: How to distinguish it from similar-looking skin diseases

First, check if it spreads rapidly, becomes purulent, or is painful

We first check for yellow crusts, excessive oozing, heat sensation, swelling, pain, fever, or chills.

We check the changes on the skin surface over time.

We review photos in chronological order, from small spots to blisters, oozing, scabs, cracking, and scaling.

We check how itching and sleep change after dermatological treatment.

While maintaining the diagnosis and topical treatment, we monitor only the changes in nighttime itching, sleep, and work performance.

Why does it keep getting worse?

Reasons why nummular eczema persists or recurs

First, we distinguish it from tinea corporis, which grows only at the edges.

We check whether the entire plaque is itchy and oozing, or if the center is pale while the edges expand.

Wet plaques and dry plaques are not treated with the same prescription.

We prioritize acute oozing and heat sensations separately from chronic thickening and cracking.

We check the dryness of the lower body along with the body's recovery capacity.

We look for connections between recurrence and bathing, heating, friction, coldness or edema in the lower body, digestion, and fatigue.

Educational close-up example of atopic dermatitis showing dry redness and shallow scratch marks in the inner fold of the elbow — 03 · View with main textDryness and scratch marks in the elbow fold
We examine dryness, fine flaking, skin texture, and scratch marks in the folding areas. Contact dermatitis or infections with similar appearances are distinguished through progress monitoring and examination.

Things to prepare before your visit

What photos and records should I prepare before the medical evaluation?

Please prepare photos of the overall skin changes and the edges, the date of first occurrence, changes in blisters, oozing, scabs, and scaling, itching, sleep, pain, heat sensation, fever, and any topical agents used.

Small spots and bumps cluster together

We record the initial size and the speed at which they merge through photos to observe the sequence of skin changes.

Swelling, blisters, and oozing may occur

We record the amount of oozing, the extent to which it stains clothes or bedding, and the level of itching and pain.

Common on arms and legs, and may spread to the torso

We check the number of new skin changes on the arms, legs, and torso on a weekly basis, rather than on the face or scalp.

Changes to monitor during treatment

What changes should I monitor during treatment?

The first plaque to appear and the order of spread

Please record when it started and how it has changed, including the dates. To make it easier to compare before and after, take photos of the same area from a similar distance and under similar lighting.

Current primary symptoms: oozing and heat sensation vs. dryness and cracking

Please leave a brief note. Compare not only the visible changes but also whether your sleep, pain, and daily life have become less uncomfortable.

Medications used, bacterial/fungal tests, bathing, heating, and lower body edema

Please also include the dates of any medications, ointments, or procedures you are currently using. This makes it easier to compare what led to improvement or worsening.

Educational example of atopic dermatitis showing dry reddish-brown plaques, prominent skin texture, and faint scratch marks on a child's elbow crease — 04 · View with main textDry atopic lesions in the skin folds of children
In pediatric atopy, skin folds such as the inner elbows and behind the knees may become more prominent as the child grows. Record nighttime itching and scratch wounds together.
Conceptual reference · American Academy of Dermatology, Atopic dermatitis overview

When planning herbal medicine treatment

For nummular eczema, the direction of Korean herbal medicine treatment is determined based on the currently prominent symptoms.

Rather than the round shape itself, we observe whether it is currently moist and hot, red and spreading rapidly, or thick and dry, and whether healing is delayed amidst lower body edema, digestive issues, or fatigue.

Pattern identification (Byeon-jeung) in Korean medicine is not about giving a different name to a disease. Multiple patterns can overlap in one person, and as the skin changes, for example, as oozing and heat decrease and dryness or cracking remain, the prescription is adjusted accordingly.

01 · Damp-Heat Infiltration / Oozing Type

When the entire plaque is moist and scabbing recurs

Primary skin observations: We observe for oozing, yellow scabs, edema, pus, and pain.
Overall body condition to check alongside skin: We check if symptoms worsen after sweating, exposure to humidity, or overeating, and if the body feels heavy and bloated.
Primary considerations for herbal medicine prescription: After addressing infection, the focus is on clearing heat and resolving dampness to reduce moisture, heat, and oozing.

02 · Blood-Heat / Erythema Spreading Type

When new red, hot, round plaques appear

Primary skin observations: We observe for vivid redness, heat sensation, itching, and the speed at which new plaques form.
Overall body condition to check alongside skin: We ask about heat in the upper body and worsening of symptoms after exposure to heat, alcohol consumption, or lack of sleep.
Primary considerations for herbal medicine prescription: The focus is on nourishing the blood and clearing heat to reduce active skin heat and inflammation.

03 · Blood Deficiency-Wind Dryness / Dry Lichenoid Type

When old plaques become thick, crack, and itch at night

Primary skin observations: We observe for dryness across the plaque, thick skin texture, cracks, and scratch marks.
Overall body condition to check alongside skin: We check for dryness of the skin and mouth, sleep disturbance at night, and fatigue.
Primary considerations for herbal medicine prescription: Emphasis is placed on nourishing the blood and moisturizing dryness to aid the recovery of the skin barrier and skin health.

04 · Spleen Deficiency-Dampness / Lower Body Recovery Type

When calves are swollen and wounds heal slowly

Primary skin observations: We observe multiple plaques on the lower body, edema, pigmentation marks, and recovery time.
Overall body condition to check alongside skin: We ask about poor digestion, loose stools, afternoon fatigue, and a cold sensation in the lower body.
Primary considerations for herbal medicine prescription: We strengthen the spleen and stomach, fluid metabolism, and the recovery of Qi and blood to reduce recurrence and delayed healing.

How is the herbal medicine prescription adjusted?

First, distinguish from tinea or psoriasis
We check the edges and center, perform fungal tests, and look for clues on the nails and scalp.
Confirm whether it is a period of oozing or a period of drying and cracking
Even for the same plaque, the focus shifts between clearing heat and removing dampness, and moisturizing and recovery, depending on the stage.
We examine new plaques, oozing, cracking, and the interval between recurrences together.
We compare the recovery progress on a monthly basis using photos and sleep records.

When should I consider Korean herbal medicine treatment?

When coin-shaped plaques repeatedly appear on the same arm or leg, even if they subside after applying ointment
When dryness, cracking, and itching persist for a long time after oozing and crusting
When you have repeatedly undergone treatment for tinea (ringworm) and eczema, but the diagnosis and progress remain unclear

What will be asked during the medical evaluation?

The first plaque to appear and the order in which they spread
Whether the current primary symptoms are oozing and heat, or dryness and cracking
Medications used, fungal tests, bathing habits, heating, and lower body edema

Things to prepare before the consultationPlease prepare photos of the overall skin changes and the edges, the date of first occurrence, changes in blisters, oozing, crusts, and scales, itching, sleep patterns, pain, heat, fever, and any topical agents used.

If pus, pain, or redness spreads rapidly, or if you have a fever, lesions inside the eyes or mouth, shortness of breath, or sudden facial swelling, please visit a dermatology clinic or seek emergency care first. After confirming that such urgent situations are not present, Baekrokdam provides herbal medicine treatment for chronic and recurring skin diseases.

Consult about the progress of nummular eczema

Frequently Asked Questions

Frequently Asked Questions about Nummular Eczema

How does nummular eczema develop?

Small spots or bumps merge to form very itchy circular or oval plaques, which may transition from blisters and oozing to crusting, cracking, and scaling.

Where does it mainly occur?

It is common on the arms and legs and may spread to the torso. While it can appear as a single plaque, it often manifests as multiple skin changes.

How is it different from tinea (ringworm)?

Both are circular and the center tends to clear, making it difficult to distinguish by appearance alone. A skin examination is performed, and selective tests are conducted if necessary.

If there is oozing, is it an infection?

Oozing can occur even in the early stages of skin changes, but if accompanied by yellow crusts, heat, edema, pain, or fever, an infection is promptly evaluated.

What is the exact cause of nummular eczema?

A single exact cause is not known. Severe skin dryness, minor injuries, contact hypersensitivity, and certain medications can act as triggers or aggravating factors, so we examine the circumstances before and after the onset.

Can nummular eczema develop at the site of an insect bite?

It can begin after skin damage such as cuts, insect bites, or abrasions. However, a definitive diagnosis is not made based solely on the fact that a circular skin change appeared after an injury.

How can I tell the difference between nummular eczema and tinea (ringworm)?

Both can be round and itchy, making them difficult to distinguish by photos alone. We differentiate them by examining the edges and the pattern of spread, and by performing dermatology tests if necessary.

References and update date

Doctor of Korean Medicine Choi Yeon-seung verified the content based on the official and professional materials below and updated it on 2026-08-23.

NHS, Discoid eczemaStages of blisters, oozing, crusting, and scaling of circular or oval skin changes, and symptoms where infection is suspected
MedlinePlus, Nummular eczemaItchy coin-shaped skin changes on the arms and legs, and spread to the torso, oozing, or crusting
AAD, Nummular eczemaItchy, raised round skin changes and differential diagnosis between tinea and psoriasis
AAD, Nummular eczema diagnosis and treatmentSkin examination, swab specimens for infection, skin biopsy, and patch tests if symptoms repeatedly fail to respond to treatment
DermNet, Discoid eczemaSkin protection, avoiding irritants, moisturizing, topical steroids, and treatment for infection or severe cases
AAD, Atopic dermatitis treatmentSkin barrier moisturizing, topical anti-inflammatory agents, and safety principles for infection treatment

Medical Inquiry

Please provide photos of your symptoms when they are severe and when they are mild, as well as any discomfort you have experienced in your daily life.

Consult about the progression of nummular eczema