Patient Information Leaflets (PILs)
These Patient Information Leaflets (PILs) are specially written by the British Association of Dermatologists (BAD).
The BAD has been awarded The Information Standard certification for the process it employs to develop information products aimed at the general public, which include PILs, Sun Awareness Campaign materials, and other information products.
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There are thousands of different skin complaints, therefore, the focus of the British Association of Dermatologists' PILs production is on the most common, rarest or debilitating skin conditions.
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Hairs are formed within the skin in tiny structures known as hair follicles. The word folliculitis describes inflammation of hair follicles and may happen anywhere on the body. The term folliculitis barbae is inflammation of hair follicles in the beard area (‘barba’ is the Latin word for beard).
Folliculitis decalvans is a rare chronic (long term) inflammatory condition of the scalp. Very rarely it can affect other hair-bearing skin such as the beard, armpits, pubic area and legs. The prolonged inflammation that usually occurs leads to scarring. Folliculitis decalvans is derived from Latin and means inflammation of the hair root associated with hair loss.
Folliculitis decalvans is not contagious and is not a type of skin cancer.
Fox-Fordyce disease is a rare skin disorder affecting the apocrine sweat glands. These are special sweat glands found in the armpits, genital region and breasts that produce a more dense secretion than the normal or ‘eccrine’ sweat glands found elsewhere on the body. Patients with this condition experience itchy bumps on the skin around the hair follicles.
Frontal fibrosing alopecia
Frontal fibrosing alopecia is a form of scarring hair loss affecting the hair margin on the front of the scalp. This happens due to inflammation and destruction of the hair follicles. There may also be hair loss from the scalp near the ears and from the eyebrows. Sometimes hair loss can also occur from other parts of the body, but this is less common. FFA occurs mostly in white postmenopausal women but can occur in premenopausal women, men, and people of other ethnicities. Frontal fibrosing alopecia is thought to be a variant of another condition called lichen planopilaris.
Fungal infections of the nails
Fungal infections of the nails are also known as dermatophytic onychomycosis, or tinea unguium. The responsible fungus is usually the same as that that causes athlete’s foot – a common infection of the skin of the feet, especially between the toes. In athlete’s foot the responsible fungus lives in the keratin that makes up the outer layer of the skin. When the fungus spreads to the keratin of the nails, the result is a fungal nail infection.
Granuloma annulare is an uncommon skin condition, which most often affects children and young adults but can occur at any age. It is twice as common in women as in men. The reason for this is unknown.
It usually presents as groups of small firm bumps in the skin which come together to form a characteristic ring shaped (annular) patch. These typically occur on only one or two sites of the body, often overlying bony areas such as the back of the hands, the feet, elbows or ankles.
Guselkumab is a biologic medicine that has been designed to treat psoriasis. It works by specifically targeting a chemical messenger (known as a ‘cytokine’) in the body called ‘interleukin-23’ (IL-23). We know that IL-23 is one of the main causes of inflammation in psoriasis, and by blocking it guselkumab can improve symptoms of psoriasis.
Haemangioma of infancy
A ‘haemangioma’ (Greek for blood-vessel-growth) of Infancy is a benign (not cancerous) overgrowth of blood vessel cells that is self-limiting (will stop growing without treatment). The term ‘strawberry naevus’ or ‘strawberry haemangioma’ is used for a haemangioma that look similar to a strawberry.
Hailey-Hailey disease is also known as familial benign chronic pemphigus. It was originally described by the Hailey brothers. It is a rare inherited skin condition in which there are red scaly areas that can be itchy and sore, that can lead to superficial blisters and eroded (broken) areas of the skin. This usually affects the folds of the groin, armpits, neck and under the breasts. The condition flares intermittently and tends to come and go. Many patients are able to lead full and normal lives, with their condition being a nuisance rather than a serious problem. Some people are more severely affected and experience more persistent painful raw areas of the skin with development of superficial blisters.
Hair loss - female pattern (androgenetic alopecia)
Female pattern hair loss (FPHL) has also been called androgenetic alopecia. It is the most common type of alopecia (hair loss) in women and the severity can vary.