Alopecia areata
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Alopecia areata
Integumentary system
Pigmented skin disorders
Vitiligo
Albinism
Acneiform skin disorders
Acne vulgaris
Folliculitis
Rosacea
Hidradenitis suppurativa
Papulosquamous and inflammatory skin disorders
Contact dermatitis
Atopic dermatitis
Lichen planus
Pityriasis rosea
Psoriasis
Seborrhoeic dermatitis
Urticaria
Keratotic skin disorders
Actinic keratosis
Vesiculobullous skin disorders
Epidermolysis bullosa
Bullous pemphigoid
Pemphigus vulgaris
Desquamating skin disorders
Erythema multiforme
Stevens-Johnson syndrome
Skin integrity disorders
Pressure ulcer
Sunburn
Burns
Frostbite
Skin infections
Cellulitis
Erysipelas
Impetigo
Necrotizing fasciitis
Human papillomavirus
Varicella zoster virus
Poxvirus (Smallpox and Molluscum contagiosum)
Coxsackievirus
Herpes simplex virus
Candida
Malassezia (Tinea versicolor and Seborrhoeic dermatitis)
Pediculus humanus and Phthirus pubis (Lice)
Sarcoptes scabiei (Scabies)
Human herpesvirus 6 (Roseola)
Parvovirus B19
Varicella zoster virus
Measles virus
Rubella virus
Skin neoplasms
Vascular tumors
Human herpesvirus 8 (Kaposi sarcoma)
Angiosarcomas
Skin cancer
Hair and nail disorders
Alopecia areata
Telogen effluvium
Onychomycosis
Integumentary system pathology review
Pigmentation skin disorders: Pathology review
Acneiform skin disorders: Pathology review
Papulosquamous and inflammatory skin disorders: Pathology review
Vesiculobullous and desquamating skin disorders: Pathology review
Skin cancer: Pathology review
Bacterial and viral skin infections: Pathology review
Viral exanthems of childhood: Pathology review
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Summary
Alopecia areata is a type of hair loss that usually affects hair follicles. It can occur in anyone, of any age and gender. It causes patchy hair loss, typically along the scalp, but it can also involve the eyebrows, eyelashes, and other body hair. In most cases, only small patches are affected and the hair will eventually regrow on its own. However, in some cases the hair loss can be more severe and widespread, involving large areas of the scalp or even all over the body.
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