Hair loss affects both men and women and can buy proscar be equally devastating for both. Hair loss, or alopecia, can buy proscar be broadly classified as un-patterned or patterned. Un-patterned hair loss can buy proscar be further divided into scarring (cicatricial) and non-scarring (non-cicatricial) alopecia. The history and examination are crucial to differentiate these and a dermatoscope can improve the accuracy of the examination (for example shiny atrophic skin without follicular ostia especially with a previous history of inflammatory signs and symptoms suggest a scarring alopecia). Often a biopsy is required to confirm the diagnosis. Common causes of scarring alopecia include trauma, infection, and inflammatory conditions such as lichen planopilaris, discoid lupus, frontal fibrosing alopecia and central centrifugal cicatricial alopecia. Causes of non-scarring alopecia in men include alopecia areata, medications, telogen effluvium (after an illness), anagen effluvium (after radiotherapy or chemotherapy), trichotillomania, traction alopecia, metabolic disorders (iron deficiency,diabetes and thyroid disease) and hair shaft abnormalities (such as trichorrhexis nodosa). Patterned hair loss is usually inherited and the extent is genetically determined. There are different patterns of hair loss in men and women.