Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Nummular eczema
Nummular eczema is an inflammatory skin condition characterized by well-demarcated, coin-shaped skin lesions, 1-3 cm in diameter. It presents as patches of clustered round, red rashes accompanied by severe itching.
View detailsKeratosis pilaris
Keratosis pilaris, commonly known as "chicken skin," is a common follicular keratotic disorder characterized by keratotic follicular papules with varying degrees of perifollicular erythema. It commonly affects the extensor surfaces of the upper arms and thighs, as well as the buttocks. In severe cases, it can also appear on the face, scapulae, forearms, and lower legs, with occasional generalized distribution. This condition affects nearly 50% of adolescents and about 40% of adults, with a higher prevalence in females than males. The incidence is highest during childhood and adolescence.
View detailsPrickly heat
Prickly heat, also known as miliaria, is also referred to as heat rash or sweat rash. It is a common transient skin condition in summer, caused by hot and humid weather, excessive sweating, and impaired sweat excretion. The sweat ducts become blocked by keratin, leading to sweat extravasation that infiltrates and irritates the surrounding tissues, resulting in papules, papulovesicles, and vesicles at the sweat pores. Prickly heat generally resolves spontaneously after environmental ventilation and cooling.
Hand eczema
Hand eczema refers to an eczematous disease localized to the hands. This condition is common in individuals prone to allergic reactions. The hands may present with erythema, fissures, edema, blisters, and crusts, accompanied by symptoms such as itching.
View detailsDyshidrotic eczema
Dyshidrotic eczema is a vesicular skin disease that symmetrically affects the hands and/or feet. It is more common in young and middle-aged individuals between 20 and 40 years old, with a higher prevalence in females. Typical skin lesions are small vesicles deep in the epidermis, slightly elevated above the skin surface, accompanied by varying degrees of itching and burning sensations. It usually recurs periodically each year.
View detailsSummer dermatitis
Summer dermatitis is a seasonal inflammatory skin disease caused by hot weather, often occurring from June to August. This disease is more common in adults, with symmetrical skin lesions on the trunk and limbs, especially on both shins. It manifests as large patches of bright red erythema, with pinpoint to millet-sized papules and papulovesicles on the erythematous base. It is accompanied by severe itching, and scratching can lead to excoriations and blood scabs, eventually causing the skin to become rough and thickened.
View detailsNevus sebaceus
Nevus sebaceus is a tumor-like lesion formed by the abnormal combination and arrangement of normal skin tissues. Initially, it presents as a well-demarcated, thin, orange-yellow or yellowish-brown, oval, round, or linear plaque. During puberty, the lesion gradually thickens, forming a verrucous mass.
View detailsPapular urticaria
Papular urticaria is a common, recurrent allergic skin disease. It is most common in children aged 1 to 7 years, but can occur at any age. It presents as sudden onset of papules or papulovesicles, often accompanied by severe itching.
View detailsIchthyosis
Ichthyosis is a group of keratinization disorders characterized by varying degrees of fish-scale-like desquamation, accompanied by rough and dry skin. Most cases of ichthyosis are congenital, while some adult patients develop ichthyosis secondary to other diseases, which is known as acquired ichthyosis.
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