Types and Causes of Hair Loss

SCALP PROBLEMS

Many conditions can cause scalp disorders. From dandruff to ringworm or something more severe like a bacterial infection or autoimmune diseases.

Understand the causes that can trigger these different scalp conditions.

DANDRUFF

Dandruff is a harmless, chronic condition. It occurs when the scalp gets greasy or dry and produces flakes of dead skin that appear in the hair or on the shoulders. People most often think of dandruff as anything that produces a flaky scalp.

Causes of dandruff can include a yeastlike fungus (Malassezia), minoxidil usage, sensitivity to hair care products (contact dermatitis), not shampooing often enough.

PSORIASIS

Scalp psoriasis causes raised, scaly red patches that may spread beyond the scalp to the forehead or back of the neck or ears.

SEBORRHOEIC DERMATITIS

Seborrhoeic dermatitis is very common. Many people don’t even know they have it. Overall it has been reported to affect about 4% of the population, and dandruff (which is mild seborrhoeic dermatitis of the scalp) can affect almost half of all adults. It can start at any time after puberty and is slightly commoner in men.

Seborrhoeic dermatitis occurs when there is excessive sebum from the oil glands of the skin. If untreated the affected area will become itchy and sore.

Causes of Seborrhoeic dermatitis can include stress, genes, a yeast that normally lives on the skin, certain medical conditions and medicines, cold, dry weather.

PITYRIASIS AMIANTACEA

Pityriasis Amiantacea is an eczematous condition of the scalp resulting in hair loss in which thick tenaciously adherent scale infiltrates and surrounds the base of a group of scalp hairs.

The cause is not known, but this condition is often seen with Psoriasis suggesting it is an autoimmune disorder.

CONTACT DERMATITIS

Contact dermatitis is a type of eczema. Contact with a particular substance triggers it.With treatment, most people with contact dermatitis can expect their symptoms to improve. Some cases will clear up completely.

Irritant dermatitis affects only the area exposed to the substance, while allergic dermatitis can occur away from the contact area. If there is an allergic reaction to a substance, it will occur on the second exposure to that substance.

Causes of Contact Dermatitis can include hair products, chemical straightening, hair colors, stress and food intolerance.

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