Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Rosacea
Rosacea, commonly known as "wine nose" or "brandy nose," is a common chronic, recurrent inflammatory skin disease. It primarily affects the facial blood vessels and pilosebaceous units, manifesting as skin flushing, erythema, papules, pustules, telangiectasias, and hypertrophic skin changes (such as rhinophyma).
View detailsVulvar condyloma acuminatum
Vulvar condyloma acuminatum is a proliferative warty lesion of the vulvar skin caused by human papillomavirus (HPV) infection. It is a sexually transmitted disease that commonly affects sexually active young and middle-aged individuals.
View detailsAlopecia areata
Alopecia areata, commonly known as "spot baldness," is a sudden, localized, patchy hair loss condition. It manifests as sudden, circular or oval patches of hair loss, with the affected skin being smooth, without inflammation or scarring. It can occur at any age, but is more common in young and middle-aged adults. The etiology is currently unknown, but it may be related to factors such as autoimmunity, genetics, and emotional stress.
Erythroderma
Erythroderma is a severe inflammatory skin disease characterized by erythema covering more than 90% of the body surface. Erythroderma is relatively rare and can occur at any age, but is more common in men over 40. It presents with flushing, swelling, scaling, and warmth of the skin.
View detailsPigmented purpura
Pigmented purpuric dermatosis, also known as pigmented purpura, is a group of chronic purpuric skin diseases of unknown etiology, caused by extravasation of red blood cells due to mild inflammation and capillary hemorrhage, and is not related to coagulation dysfunction. The purpura often symmetrically distributes on both lower extremities, presenting as non-blanching purplish-red, rust-colored, or brownish-yellow petechiae and ecchymoses. Most patients are asymptomatic, while a few experience varying degrees of pruritus.
View detailsLeprosy
Leprosy, also known as Hansen's disease, is a chronic infectious disease caused by Mycobacterium leprae, primarily affecting the skin and peripheral nerves. Early symptoms may include primary skin lesions such as macules, papules, and nodules, as well as sensory loss in the affected areas, muscle weakness, and ulcers. In severe cases, it can lead to facial disfigurement and limb deformities. Early diagnosis and treatment can completely cure the disease without leaving any sequelae.
View detailsRadiation dermatitis
Radiation dermatitis refers to the inflammatory reaction of the skin and mucous membranes caused by various types of ionizing radiation, including radioisotopes and X-rays, leading to tissue damage. It is one of the most common side effects of tumor radiotherapy. This condition is common in cancer patients undergoing radiotherapy, especially those with breast cancer, head and neck cancer, lung cancer, or sarcoma. The main symptoms include hair loss, hyperpigmentation, dark red patches, blisters, skin atrophy, and absence of hair.
View detailsOnychomycosis
Onychomycosis, also known as tinea unguium, is a nail disease caused by dermatophytes invading the nail plate and nail bed. Both fingernails and toenails can be affected, presenting as nail plate turbidity, thickening, separation, discoloration, atrophy, shedding, lifting, uneven surface, onychogryphosis, or pachyonychia. Some patients may also have ingrown nails and paronychia. Clinically, there is another disease called onychomycosis, which refers to nail infections caused by fungi such as dermatophytes, yeasts, and non-dermatophyte molds. Strictly speaking, tinea unguium is only a part of onychomycosis, but for ease of understanding, the two are usually discussed together.
View detailsCallus
A callus, commonly known as a "hard skin," is a localized thickening and hardening of the skin's stratum corneum due to prolonged pressure and friction. It primarily occurs on prominent areas of the palms and soles of the feet. The main symptom is the appearance of yellowish keratin on the hands and feet, which is thicker in the center and thinner at the edges, with a hard texture.
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