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Related Subjects: |Nikolsky's sign |Koebner phenomenon |Erythema Multiforme |Pyoderma gangrenosum |Erythema Nodosum |Dermatitis Herpetiformis |Lichen Planus |Acanthosis Nigricans |Acne Rosacea |Acne Vulgaris |Alopecia |Vitiligo |Urticaria |Basal Cell Carcinoma |Malignant Melanoma |Squamous Cell Carcinoma |Mycosis Fungoides (Sezary Syndrome) |Xeroderma pigmentosum |Bullous Pemphigoid |Pemphigus Vulgaris |Seborrheic Dermatitis |Pityriasis/Tinea versicolor infections |Pityriasis rosea |Scabies |Dermatomyositis |Toxic Epidermal Necrolysis |Stevens-Johnson Syndrome |Atopic Eczema/Atopic Dermatitis |Psoriasis |Alopecia Areata |Alopecia
Alopecia refers to hair loss from the scalp or other parts of the body, and it can result from a variety of causes. These include genetic factors, medical conditions, medications, and environmental influences. Understanding the different types of alopecia, their causes, symptoms, diagnosis, and treatment options is essential for effective management. Alopecia is often classified into scarring and non-scarring forms.
Type of Alopecia | Description | Causes | Common Symptoms |
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Androgenetic Alopecia (Male and Female Pattern Baldness) | The most common form of hair loss, characterized by gradual thinning of hair. | Genetically determined, hormonally influenced (testosterone and dihydrotestosterone). | Men: Receding hairline and bald spots. Women: Diffuse thinning, particularly on the crown. |
Alopecia Areata | An autoimmune condition causing patchy hair loss, which can progress to more severe forms. | The body's immune system mistakenly attacks its own hair follicles. | Patchy hair loss on the scalp or body, which may progress to total scalp loss (Alopecia Totalis) or total body loss (Alopecia Universalis). |
Telogen Effluvium | A temporary form of hair thinning due to a disturbance in the hair growth cycle. | Triggered by stress, illness, medications, or hormonal changes. | Sudden, diffuse hair shedding. Hair may come out in clumps when washing or combing. |
Traction Alopecia | Hair loss caused by prolonged tension on the hair. | Common in individuals who wear tight hairstyles such as braids, ponytails, or hair extensions. | Gradual hair thinning and breakage, especially along the hairline. |
Scarring Alopecia (Cicatricial Alopecia) | Permanent hair loss due to inflammation and scarring of the hair follicles. | Conditions like lupus, lichen planopilaris, burns, radiotherapy, fungal infections, or bacterial infections. | Hair loss with scarring and skin changes, making hair regrowth impossible. Skin may appear inflamed, red, or scaly. |
Non-Scarring Alopecia | Hair loss without permanent damage to the follicles. Regrowth is possible if the underlying cause is treated. | Endocrine disorders, pregnancy, fungal infections, drugs (e.g., carbimazole, lithium), malnutrition, aging. | Diffuse thinning, shedding, or localized patches of hair loss, which may regrow once the underlying issue is addressed. |
Alopecia encompasses various forms of hair loss, each with different causes, symptoms, and treatment options. Accurate diagnosis is key to effective management, which may involve medications, procedures, lifestyle changes, and alternative therapies. Identifying and addressing the underlying causes can help improve outcomes and manage alopecia effectively.