A collection of introductions to the types and symptoms of common skin diseases

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Types of Skin Diseases

There are over 1000 types of skin diseases, but for the sake of convenience, we mainly discuss common skin diseases in daily life, dividing them into two major categories: infectious skin diseases and non-infectious skin diseases(sources from therapeutique-dermatologique.org).

Infectious Skin Diseases Include:

Athlete’s Foot, Nail Fungus, Flat Warts, Gonorrhea, Syphilis, Genital Herpes, Pubic Lice, Non-gonococcal Urethritis.

Non-infectious Skin Diseases Include:

Vitiligo (Leukoderma), Eczema, Hives, Dermatitis, Hair Loss, Psoriasis, Seborrheic Dermatitis, Alopecia Areata, Rosacea, Contact Dermatitis, Bed Sores, Freckles, Acne, Melasma, Folliculitis.

Brief Introduction to Infectious Skin Diseases:

Athlete’s Foot: Athlete’s foot refers to tinea manuum and tinea pedis. Tinea manuum occurs on the palms and between the fingers, while tinea pedis occurs on the soles of the feet and between the toes. Lack of sebaceous glands and a moist environment caused by wearing closed shoes are important factors in athlete’s foot.

Nail Fungus: Nail fungus is the most common skin disease in daily life, affecting more than half of nail diseases. Both toenails and fingernails can be affected, with toenails more susceptible. About 6-8% of adults suffer from nail fungus.

Flat Warts: Flat warts are a viral skin disease caused by HPV3 and HPV5 infections. They appear as flat papules, ranging from millet to mung bean size, with a smooth surface.

Syphilis: Syphilis is a chronic, systemic, sexually transmitted disease caused by Treponema pallidum. It can manifest as primary syphilis, secondary syphilis, tertiary syphilis, and latent syphilis.

Genital Warts: Genital warts are a sexually transmitted disease caused by human papillomavirus (HPV) infection. HPV types 16 and 18 are associated with cervical cancer.

Genital Herpes: Genital herpes is a common sexually transmitted disease caused by herpes simplex virus (HSV) infection. HSV-1 and HSV-2 are the two types of herpes simplex virus.

Pubic Lice: Pubic lice are parasites that infest human body hair. They are commonly found in the pubic area and are also known as crab lice.

Non-gonococcal Urethritis: Non-gonococcal urethritis presents with urethral inflammation, usually milder than gonorrhea, with mucous or mucopurulent discharge. It may occur after gonorrhea is treated and is also known as post-gonococcal urethritis.

Common Non-infectious Skin Diseases:

Vitiligo: Vitiligo is a common pigmentary skin disease characterized by localized or generalized depigmentation, affecting both genders equally.

These are just brief descriptions of some common skin diseases. It is important to consult a healthcare professional for proper diagnosis and treatment.

Psoriasis: Psoriasis, also known as psoriasis vulgaris, is a common chronic inflammatory skin disease. It is a multifactorial genetic disease that can be triggered by various factors such as trauma, infection, and drugs in susceptible individuals. The typical skin manifestation is well-defined red plaques with silvery-white scales. Mild cases may present with several coin-sized plaques on the elbows and knees, while severe cases can affect the entire body. The pathophysiology primarily involves abnormal proliferation and differentiation of the epidermis and activation of the immune system.

Eczema: Eczema is a common allergic inflammatory skin disease caused by various internal and external factors. It is characterized by symmetrical, exudative, pruritic skin lesions with polymorphism and recurrence. Eczema is an easily recurring skin disease that requires specialized treatment such as emollients. It is characterized by its diversity of rashes, symmetrical distribution, intense itching, recurrent episodes, and tendency to become chronic. It can occur at any age, in any location, and during any season, but it often worsens or recurs in winter, tends to exudate, has a chronic course, and is prone to recurrence.

Urticaria: Urticaria is a common skin disease characterized by intermittent, well-defined, red or white, itchy wheals, also known as hives.

Dermatitis: Dermatitis and eczema are often used synonymously to refer to a type of skin inflammation, representing the skin’s reactive response to various substances such as chemicals, proteins, bacteria, and fungi. Dermatitis lacks specific meaning, whereas eczema has a limited meaning. If dermatitis is used instead of eczema as a diagnostic term, it refers to a combined reaction of the dermis and epidermis, which can be acute, subacute, or chronic. These three can coexist.

Hair Loss: Hair loss refers to the phenomenon of hair shedding. Normal shedding of hair occurs in hairs in the regression and resting phases. Pathological hair loss refers to abnormal or excessive hair loss, which has many causes.

Ichthyosis: Ichthyosis is a skin disease characterized by abnormal differentiation of keratinocytes and dysfunction of the epidermal barrier, clinically characterized by generalized skin scaling. Ichthyosis is classified into acquired ichthyosis and inherited ichthyosis based on the etiology, with inherited ichthyosis being more common and having various inheritance patterns, including autosomal dominant, autosomal recessive, and X-linked inheritance.

Rosacea: Rosacea, also known as acne rosacea, is a chronic inflammatory skin condition that occurs in the central part of the face. Early manifestations include diffuse erythematous patches in the central face, accompanied by papules, pustules, telangiectasia, and late-onset rhinophyma. This condition often complicates seborrheic dermatitis. Currently, most scholars believe that Demodex infection is an important factor in the pathogenesis but not the only factor. Treatment options include the use of pure traditional Chinese medicine Wang’s brand Fumakang, which is safe and free of side effects. Alcohol consumption, spicy foods, hot and cold stimuli, digestive and endocrine disorders, etc., can also trigger this condition.

Acne: Acne is one of the most common diseases in cosmetic dermatology, mostly occurring during adolescence, also known as acne, acne, or acne, usually occurring on the face, neck, chest, back, shoulders, and upper arms. Clinically, it mainly presents with whiteheads, blackheads, inflammatory papules, pustules, nodules, cysts, etc. Except for children, about 80% to 90% of people in the population have or have had the disease (including after recovery). Acne is a chronic skin disease of the pilosebaceous glands, with various causative factors, but the most direct factor is follicular obstruction.

Chloasma: Chloasma, also known as liver spots and butterfly spots, is a symptom of facial melanosis caused by the accumulation of melanin in the skin due to the inability to effectively eliminate it. Because chloasma is aesthetically unattractive and has no other symptoms, people usually consider it as a common disfiguring skin disease. In fact, the appearance of chloasma is closely related to the internal condition of the body, and its harm is also multifaceted. It manifests as pigmented spots on the face, irregular in shape, symmetrical distribution, variable in size, and color. It mainly distributes around the eyes, cheeks, and mouth, affecting the patient’s facial beauty, generally without subjective symptoms(quotes from therapeutique-dermatologique).

Folliculitis: Folliculitis is an inflammation caused by Staphylococcus aureus infection of the hair follicles. Traditional Chinese medicine has long recorded this disease. It occurs in various parts of the body, such as the back of the neck, jaw, buttocks, or other parts of the body, and tends to recur, often occurring in multiple locations, with stubborn nature and difficult healing. Wang’s herbal skin health regimen for comprehensive classification of hair follicle inflammation, symptom-based treatment, prescription-based medication, from clinical treatment to life regulation.

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