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Skin Diseases – Comprehensive Dermatology Guide in Switzerland | iDerma

Skin diseases

Reddened cheek skin with widespread inflammatory papules resembling rosacea

Facial rosacea: symptoms, causes, and effective treatments

Numerous red inflamed papules and rash on the skin typical of contagious scabies.

Scabies

Pale hypopigmented patch on a child's cheek, characteristic of pityriasis alba.

Pityriasis alba (white patch skin condition) – causes, symptoms & treatment

Brownish pigment patches on the cheek skin indicating facial hyperpigmentation.

Hyperpigmentation: causes, types, and modern treatment methods

Brownish, well-defined patch in the groin fold, typical of erythrasma and assessable during an online dermatology consultation.

Erythrasma: causes, symptoms, and treatment

Yellow-purple hematoma on a leg near the knee, showing a healing bruise on the skin.

Hematoma: symptoms, treatment and diagnosis

Small whitish-yellow papules along the lip border, characteristic of Fordyce spots.

Fordyce granules — causes, symptoms, and treatment

Red, scaly and inflamed skin of atopic dermatitis on the forearm and wrist

Atopic dermatitis: how to recognize, treat, and care for your skin

Pityriasis rosea showing a rash of pink scaly spots spread over the back and flank.

Pityriasis rosea: symptoms, causes, and treatment

Large reddish patches across the back and torso typical of the patch stage of mycosis fungoides

Mycosis fungoides: symptoms, stages & treatment options

Pale atrophic stretch marks (striae distensae) on the abdominal skin around the navel following skin stretching

Pcos and skin: hormonal acne, hair growth & skin changes explained

Healed linear scar on the back of the hand with a pink edge and lighter surrounding skin following an injury

Keloids: causes, symptoms & effective treatment options for raised scars

Brown pigmented patches on a woman's cheek, a typical presentation of melasma linked to sun and hormonal influences.

Melasma: causes, symptoms and treatment

Microscopic view of a Demodex folliculorum mite, which can cause skin demodicosis and eyelid inflammation.

Demodex mite: symptoms, treatment, and how to prevent demodicosis

Fine follicular bumps on the trunk skin of a young man, characteristic of keratosis pilaris.

Keratosis pilaris - goosebumps

Reddened forearm skin near the elbow covered with a fine bumpy rash typical of contact dermatitis.

Contact dermatitis

Woman parting her hair to reveal white flakes on the scalp, a common sign of dandruff and seborrheic dermatitis.

Bothered by scalp flaking and itching? you may have seborrhoeic dermatitis

Pale depigmented patches on a woman's neck and chest, characteristic of vitiligo.

Vitiligo – why do white patches appear on the skin and how to treat them?

Clustered tiny syringoma papules on the skin of the neck, benign growths of the sweat-gland ducts.

Syringoma – causes, symptoms and treatment of sweat gland bumps

A small dome-shaped brownish dermatofibroma on the skin – a firm, benign nodule.

Dermatofibroma: causes, symptoms, diagnosis, and treatment

Scattered red spots and welts on the forearm, typical of cold-induced urticaria (hives).

Cold urticaria: symptoms, causes, and treatment

Painful red subcutaneous nodules on both shins, characteristic of erythema nodosum.

Erythema nodosum – causes, symptoms, and treatment

Peeling, scaly skin on the sole and between the toes characteristic of athlete's foot (tinea pedis)

Athlete's foot

Person with alopecia areata showing clearly defined bald patches across the hair-bearing scalp

Alopecia: types of hair loss, causes, and treatment options

Crusted, ulcerated nodule on the skin, characteristic of squamous cell carcinoma, a form of skin cancer.

Squamous cell carcinoma: causes, symptoms, diagnosis, and treatment

Dry, cracked and glazed skin on the soles of a child's feet with fine scaling, typical of juvenile plantar dermatosis.

Juvenile plantar dermatosis

Close-up of the lower face with acne, redness and blemishes on the cheek and chin, suggesting hormonal acne.

Menopause and skin changes – causes, symptoms, and care

Close-up of a small yellowish xanthelasma papule on the upper eyelid near the lashes.

Xanthelasma: causes, symptoms and modern treatment options

Scattered brownish spots typical of mastocytosis across an adult's chest skin.

Cutaneous mastocytosis: causes, symptoms, and treatment

Adult woman's acne with breakouts and post-inflammatory marks around the lips and on the chin

Adult acne: causes, symptoms, and effective treatment

Large asymmetric brown-black skin lesion with irregular borders and uneven colour, suspicious for melanoma

Melanoma – skin cancer symptoms, causes & treatment options

Back of a man's head showing thinning hair and diffuse hair loss across the crown.

Hair loss treatment: causes, types and effective solutions

Reddened, irritated skin on the neck and decolletage, typical of polymorphic light eruption (sun allergy).

Polymorphic light rash (sun allergy)

A four-panel set showing red, irritated skin on the neck, upper back, chest and behind the ear.

Dermatomyositis: early skin signs and systemic impact of a rare autoimmune disease

A raised, warty seborrheic keratosis with a rough surface on the skin, reviewed remotely by a dermatologist.

Seborrhoeic keratosis

Gloved hands examining a lower leg with brownish pigmentation and inflammation of stasis dermatitis

Stasis dermatitis

Several dark red cherry angiomas, raised benign vascular growths visible on the skin surface.

Cherry angioma: causes, symptoms, and removal options

Fine red dots and diffuse redness on limb skin, typical of capillaritis or small-vessel inflammation.

Kapillaritis (pigmented purpura): causes, symptoms and treatment

Swollen, reddened lower lip with signs of inflammation, consistent with glandular cheilitis.

Glandular cheilitis: symptoms, causes, and treatment

Both palms with thickened scaling, redness and pustules, typical of palmoplantar pustulosis

Palmoplantar pustulosis

Close-up of skin covered with numerous tiny uniform flesh-coloured lichen nitidus papules

Lichen nitidus

Infant nappy-area skin with bright redness and small satellite pustules typical of a candidal infection

Candidiasis

Scratched itchy nodules and excoriations scattered across the back, characteristic of nodular prurigo.

Prurigo nodularis

Thickened, reddened lichenified plaques of lichen simplex chronicus on both lower legs.

Lichen planus

Pearly pink nodule on the skin beside the eye, typical of basal cell carcinoma, a common form of skin cancer.

Basal cell carcinoma: causes, risk factors, symptoms, and treatment

Inflammatory acne with red breakouts across a woman's face, neck and upper chest.

Acne, what is it?

Back of the hand with scaly, pinkish raised plaques characteristic of lichen planus.

Flat lichen

Both palms with peeling skin syndrome, skin shedding in large sheets to reveal reddened skin underneath.

Peeling skin syndrome: symptoms, causes, treatment

Whitish, thickened and flaking skin on both heels characteristic of pitted keratolysis.

Pitted keratolysis

Large red welts and patches on the skin, characteristic of acute spontaneous urticaria

Acute urticaria

A child's hand with dry, rough and reddened skin showing signs of atopic dermatitis on the hand.

Atopic dermatitis in children: causes, symptoms, and effective care

Thickened yellowish callus on the sole of the foot near the base of a toe, formed by prolonged pressure.

Calluses and corns: causes, symptoms & treatment

Reddened target-shaped lesions on the back of the hand, characteristic of erythema multiforme.

Erythema multiforme

Round, sharply demarcated scaly patches on the lower legs of darker skin, typical of pityriasis rotunda.

Paraneoplastic dermatological manifestation of gastrointestinal malignancies

Red, swollen toes showing signs of chilblains (perniosis) caused by exposure to cold.

Chilblains (pernio)

Back of a man's head with thinning hair at the crown, typical of androgenetic hair loss.

Androgenic hair loss

Raised dark brown melanocytic nevus on the skin, the kind a dermatologist assesses for benign features.

Skin moles: how to tell if they're benign or dangerous

Swollen, reddened nail fold with a yellowish discolored nail edge on a finger, typical of chronic paronychia.

The most common nail changes

Upper back and neck skin with a widespread red papulopustular rash.

Chemotherapy skin side effects: rashes, itching, and how to care for your skin

Skin-coloured epidermoid cyst with a central punctum in the neck area

Epidermoid cysts

Small skin papilloma with traces of blood located beside the eyebrow near the eye.

Soft fibromas (papillomas)

Tiny flat viral warts scattered across the skin of a child's forehead.

Viral warts

Peeling, dry and reddened skin on the palms and fingers with dystrophic nails, typical of exfoliative keratolysis.

Exfoliative keratolysis: causes, symptoms, and what to do

Red thick psoriasis plaques with silvery scales on both forearms and elbows.

Psoriasis

Person scratching red scaly psoriasis plaques on the elbow and arms needing a dermatologist's help.

Psoriasis

Lower leg densely covered with tiny reddish-purple petechiae, suggestive of vasculitis.

Vasculitis

Red, cracked and flaking skin at the corner of the mouth typical of angular cheilitis.

Angular cheilitis

Small red papules and pustules on an infant's cheek, typical of infantile acne

Skin conditions in newborns

A linear cluster of red insect bites on the lower back and hip, a pattern often left by bedbugs.

Insect bites

Furuncle with a yellowish pus-filled head and red surrounding skin in a hairy area, reviewed by a dermatologist.

Furuncle

Adult's protruding tongue with map-like patches characteristic of geographic tongue.

Geographic tongue

Red, itchy skin with a fine rash spreading over a woman's neck and upper chest

Skin signs of eating disorders

Two round, scaly patches of nummular dermatitis on a child's skin causing itching.

Nummular eczema

Dark red-purple purpura patch on the skin of the leg, formed by tiny areas of bleeding beneath the skin surface.

Purpura simplex

Hairy skin with small pustules centred on the hair follicles, the typical sign of folliculitis.

Folliculitis

Localised granuloma annulare forming a red ring-shaped lesion on the skin of the arm.

Granuloma annulare

Lower lip with clustered cold-sore lesions and yellow crusting characteristic of herpes simplex infection.

Herpesvirus infection

Nail psoriasis on the toenails showing thickened, yellowed and crumbling nails with deformed surface.

Nail psoriasis

Collage of six photos showing various types of moles and nevi on the skin

Mole removal: when it's needed, which method to choose, and how to prepare

Classic bull's-eye erythema migrans rash on the arm, a characteristic sign of early Lyme disease.

Lyme disease

Small reddened papules of heat rash scattered across the chest and torso of an older man.

Heat rash

Blistered impetigo lesion with a yellowish crust on a child's forearm skin

Contagious impetiga

Broad violet-red, hardened skin areas on the torso showing the inflammatory phase of localized scleroderma.

Localized scleroderma

Chest and torso covered with numerous red papules and vesicles, the typical rash of chickenpox.

Chickenpox

Several round patches of hair loss on the back of a man's head, typical of alopecia areata

Focal alopecia

Lighter, irregularly shaped patches on the skin characteristic of tinea versicolor, a fungal infection.

Multi-coloured ringworm

Palm and fingers with small vesicles and peeling, typical of dyshidrotic eczema.

Dishidrotic eczema

Clustered herpes zoster vesicles with redness spreading across the neck and shoulder

Shingles (shingles)

Severe perioral dermatitis with redness and scaling around the nose and mouth

Perioral dermatitis

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