Hair and Scalp: Diseases, Disorders, Structure, and Growth

Vocabulary practice flashcards covering diseases and disorders of the scalp and hair, hair anatomy and structures, and the stages of hair growth.

Pediculosis Capitis

A condition caused by an animal parasite called the head louse.

Tinea

A contagious disease caused by a fungal parasite called dermatophyte, also known as Ringworm.

Fungi

A member of a large group of organisms that include microorganisms, such as yeasts, molds and mildews, which cause some common scalp and hair diseases.

Tinea Favosa

A fungal infection characterized by a pink scalp with thick, whitish-yellow crusts known as scutula, and also known as Honeycomb Ringworm.

Scabies

A condition caused by the microscopic mite called sarcoptes scabei, and also known as the itch mite.

Tinea Capitis

A fungal infection of the scalp that is caused when fungus attacks the opening of the follicle, making the scalp slightly pink with red spots and a white, scaly appearance.

Tinea Barbae

A superficial fungal infection that commonly affects the skin and is also known as Barber's Itch.

Alopecia

Hair loss in abnormal amounts.

Alopecia Areata

Patches of hair loss.

Alpuria Totalis

Balding on the entire head.

Alopecia Universalis

Balding over the entire body.

Androgenic Alopecia

Male or female pattern baldness.

Fallen Hair

Hair that is naturally shed $50\text{--}100$ a day.

Fragilitas Crinum

Brittle hair.

Monlethris

Beaded hair.

Pityriasis

A scalp condition commonly known as dandruff.

Piturasis Steatoides

A scalp condition also known as Seborrheic Dermatitis.

Postpartum Alopecia

Period of temporary hair loss after childbirth.

Telogen Effluumum

A condition in which hair is prematurely pushed into the telogen stage.

Traction Alopecia

Hair loss due to excessive pulling or stretching of the hair.

Trichoptilosis

Split ends.

Thehomehexis Nodosa

Knotted hair.

Arrector Pili Muscle

A muscle structure associated with the hair follicle.

Hair Follicle

A primary component of the hair structure from which hair grows.

Dermal Papilla

A small, cone-shaped elevation located at the base of the hair follicle and bulb.

Hair Bulb

The thickened, club-shaped structure that forms the lower part of the hair root.

Cuticle

The outermost layer of the hair structure.

Anagen

The period of active hair growth.

Catagen

The period of breakdown and change in the hair growth cycle.

Telogen

The period of rest in the hair growth cycle.

Trichology

The study of hair, disorders, diseases, and hair care.

Terminal Hair

Pigmented hair located on the scalp, arms, legs, and in the nose and ears.

Keratinization

The process by which newly formed cells in the hair bulb mature.

Keratin

A strong, fibrous protein derived from amino acids that makes up hair and nails.