Structure and chemical composition of the scalp
The scalp is an ultra-specialized area of the skin, where hair is anchored. Like other hair, also the hair on the scalp originates from a hair follicle, called a bulb.
Scientific collaboration between Professor Marco Toscani and Dr. Pasquale Fino, Chair of Plastic, Reconstructive and Aesthetic Surgery, Umberto I Health Center – “Sapienza” University of Rome.
Psychogenic alopecia is a type of hair loss related to stress. Though not yet scientifically explained, this connection is well-known in the experience of those working with the problem. In addition to stress, other causes are personality disorders, states of anxiety and depression, all of which are conditions of acute or chronic stress.
The mechanism of action is nevertheless related to a “somatization” process or rather to a physical reflection of psychological stress; this makes the condition different than traction alopecia (hair loss from pulling), which is also related to a psychological disorder but of the behavioural type (it is a mechanical action that leads to the condition of hair loss).
Before defining the hair loss as psychogenic, spot baldness and pattern hair loss need to be excluded. This is not a simple diagnosis and the conditions may even overlap. More than one study has implicated the hypothalamus and the pituitary gland in the biological reaction to stress, which leads to the release of adrenocorticotropic hormones in the circulation that affect cells involved in hair formation and nourishment: cells producing sebum, keratinocytes, fibroblasts and immune cells. This reaction leads to: hypersecretion of sebum that often turns into seborrheic dermatitis; trichodynia (sensation of scalp pain), especially around the crown; perifollicular inflammation (reddened skin around the hair region).
All of these symptoms may also occur in the other two types of hair loss mentioned above.
Unlike spot baldness, which generally proceeds in patches, female stress-related hair loss leads to a scattered thinning of hair, more marked in the crown area, without recession of the hairline. In men, in addition to general thinning, the condition also leads to a receding hairline.
Obviously the best cure is removal of the stress, but this is particularly difficult, especially in individuals suffering from psychogenic hair loss who are definitely people that tend to have difficulty releasing their tension. It may prove hard to remove the cause for the stress and even psychotherapeutic approaches may take a lot of time without ever guaranteeing complete removal of the stress.
Treatment definitely requires consistency and perseverance. The therapy includes: minoxidil, finasteride and laser therapy, which do not remove the cause but are a valuable aid in countering the effects of the stress.
The scalp is an ultra-specialized area of the skin, where hair is anchored. Like other hair, also the hair on the scalp originates from a hair follicle, called a bulb.
Genetic factors influence and determine the size of the diameter in hair.
Its volume varies from person to person. This is why some individuals are born with thin hair, while others are born with thick hair.
Changes in the hair shaft lead to deterioration with the appearance of ruined or damaged hair.
In healthy hair, the cuticle is whole, with overlapping shingles. Hair with whole ends appears shiny, elastic and brushes easily.
Seborrheic hair loss is a form of premature hair loss that generally afflicts men in their youth (onset between 20 and 30 years of age), mainly affecting the frontal region and the crown. The cause, as the name of the condition suggests, is related to an excess production of sebum that provokes or accelerates hair loss.
The life cycle of hair and its subsequent growth occur at a speed of 1-1.5 cm per month. Hair is a living element that follows a follicle cycle with an average duration of 2-6 years. In humans, unlike other mammals that are subject to a periodic change, this cyclic evolution is not synchronous (therefore each hair is independent from the others).
Female hair loss is a common form of non-scarring hair loss, characterized by the progressive loss of hair in the forehead and crown regions, resulting in visible thinning. Unlike male hair loss, female hair loss in the affected areas is usually incomplete and the occipital area is generally spared.
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