Infection & Safety
Hair & Scalp
Conditions
Bacteria &
Microorganisms
Hair Growth &
Structure
Hair Disorders &
Diseases
100

The invasion of body tissues by disease-causing bacteria or viruses.

What is Infection?

100

Dandruff that appears as white, lightweight flakes scattered through the hair.

What is Pityriasis?

100

Bacteria that grow in pairs, are spherical-shaped, and cause pneumonia.

What is Diplococci?

100

The tube-like depression in the skin that contains the hair root.

What is Hair follicle?

100

The splitting of hair ends due to overexposure to heat and chemicals.

What is trichoptilosis (split ends)?

200

A parasitic particle that causes disease.

What is virus?

200

A severe case of dandruff with greasy or waxy scales that form crusts. 

What is Seborrheic dermatitis (pityriasis steatoides)?

200

Bacteria that form in clusters like grapes, producing abscesses and boils.

What is Staphylococci? 

200

The period of active hair growth. 

What is Anagen?

200

Hair that is soft, white, and downy, usually lacking a medulla.

What is langugo (vellus) hair?

300

The body's ability to fight or defend against infection and disease. 

What is Immunity?

300

A condition caused by head lice infestation. 

What is Pediculosis capitis? 

300

Rod-shaped, spore-producing bacteria. 

What is Bacilli?

300

The resting phase of hair growth. 

What is Telogen?

300

Premature or sudden hair loss, often stress-related.

What is telogen effluvium?

400

Guidelines by the CDC requiring workers to assume all human blood is infectious.

What is Standard Precautions?

400

A fungal infection of the scalp, also called ringworm of the scalp.

What is Tinea capitis?

400

Spiral or corkscrew-shaped bacteria.

What is Spirilla?

400

The process of converting living skin cells into hard proteins.

What isn Keratinization?

400

Hair with bulges along the shaft, also known as knotted hair.

What is trichorrhexis nodosa?

500

The process of destroying all microbial life, including spores.

What is Sterilization?

500

A condition caused by a microscopic mite, also known as the itch mite. 

What is Scabies?

500

Circular-shaped bactria that produce pus and can cause strep throat or blood poisoning. 

What is Cocci?

500

The strong fibrous protein that is the building block for hair, skin, and nails.

What is keratin?

500

Severe hair loss where balding occurs across the entire body.

What is alopecia universalis?