
Benzyl nicotinate
Benzyl nicotinate: toxic reaction after application of the cosmetic "Lip Injection" on the forearm; erythema extending beyond the application site with lymphangitic reaction 10 min. after application of the product.

Ringworm B35.2
Tinea manuum:For a long time now, this large-area, temporarily itchy plaque, accentuating the edges of the forearm, has been present in the 42-year-old patient (no pre-treatment).

Chronic actinic dermatitis (overview) L57.1
Dermatitis chronic actinic: An almost sharply defined flat eczema reaction on the back of the hand that has persisted for months and occurred after short gardening.

Psoriatic arthritis L40.5
Arthritis, psoriatic. solitary or multiple, chronically dynamic, recurrent, salty arthritis, especially of the small finger joints with erythematous, severe swelling and pain (sausage fingers). joint infestation ?in the beam?. usually also typical psoriatic lesions at the predilection sites.

Parapsoriasis en plaques large L41.4
Parapsoriasis en plaques, large-heart form: a few months after pregnancy, the 39-year-old patient noticed these flat, brownish, blurred plaques on the upper arm.

Hypertrophic Lichen planus L43.81
Lichen planus verrucosus. 1 year old, constantly itchy, blurred, firm plaque with a wart-like surface structure. The clinical findings are to be distinguished from those of a Lichen simplex chronicus (Vidal ).

Swimming pool granuloma A31.1
Swimming pool granuloma, detail magnification: 2 cm diameter, red-livid, discretely scaling node at the base joint of the left index finger of a 60-year-old aquarium owner.

Granuloma anulare erythematous L92.0
Granuloma of anular erythematous type. Red-brown plaque with little induration and marked central atrophy. Slow centrifugal growth lasting for months.

Back of the hand edema, chronic traumatic R60.0

Asymmetrical nevus flammeus Q82.5
Naevus flammeus lateralis. congenital, generalized, spotty erythema on the left arm in an 18-month-old boy with age-appropriate development.

Dermatitis medusica L24.8
Dermatitis medusica: A few minutes after the contact event, representation of linear, strongly consistency-multiplied, flat-exposed plaque with scab and vesicle formation (illustration was kindly provided by Dr. Heike Luther/Essen).