research Traumatic Alopecia in Trichotillomania: a Pathogenic Interpretation of Histologic Lesions in the Pilosebaceous Unit*
Skin biopsy can help diagnose hair loss from trichotillomania.
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research ‘Follicular Swiss cheese’ pattern - another histopathologic clue to alopecia areata
Dilated follicular infundibula and increased catagen/telogen follicles are key indicators for diagnosing alopecia areata.
research Harlequin fetus with abnormal lamellar granules and giant mitochondria
Harlequin ichthyosis involves abnormal skin cell structures and giant mitochondria, affecting skin and hair.
research Tinea capitis mimicking dissecting cellulitis of the scalp: a histopathologic pitfall when evaluating alopecia in the post‐pubertal patient
A fungal infection can look like a different scalp condition in teens, leading to wrong treatment until proper tests are done.
research A case report of inflammatory nonscarring alopecia associated with the epidermal growth factor receptor inhibitor erlotinib
Erlotinib can cause nonscarring hair loss and itchy skin.
research Histopathology of aging of the hair follicle
Hair becomes gray and thin as we age, and while most hair loss in older people is due to genetics, there's a chance for gray hair to regain color under certain conditions.
research Spiny keratoderma ‐ a demonstration of hair keratin and hair type keratinization
Spiny keratoderma may be ectopic hair formation on palms and soles.
research Alopecia neoplastica simulating alopecia areata and antedating the detection of primary breast carcinoma
A woman's hair loss was initially mistaken for a common hair loss condition but was later found to be caused by breast cancer cells in her scalp.
research Follicular streamers (stelae) in scarring and non-scarring alopecia
Hair root sheaths are more common in non-scarring hair loss and help diagnose the type of hair loss.
research Rippled‐pattern trichomatricoma
A unique hair tumor with a rippled pattern was identified, showing incomplete differentiation and unusual cell arrangements.
research The changes in the expression levels of follicular markers in keratoacanthoma depend on the stage: keratoacanthoma is a follicular neoplasm exhibiting infundibular/isthmic differentiation without expression of CK15
Keratoacanthoma changes as it grows, showing different hair follicle characteristics at each stage.
research Investigation of the hair follicle inner root sheath in scarring and non‐scarring alopecia
IRS premature desquamation is not unique to CCCA and occurs in various scarring alopecias.
research Expression patterns of hair and epithelial keratins and transcription factors HOXC13, LEF1, and β‐catenin in a malignant pilomatricoma: a histological and immunohistochemical study
The malignant pilomatricoma showed strong epithelial keratin expression, suggesting it may not calcify.
research Seborrheic Keratoses and Trichostasis Spinulosa
Seborrheic keratoses may partly come from hair follicle cells.
research Cellular Activity in the Dermis Surrounding the Hair Bulb in Alopecia Areata
Hair growth in alopecia areata is hindered due to impaired cell activity in the surrounding tissue.
research What causes acne inversa (or hidradenitis suppurativa)? – the debate continues
The exact cause of hidradenitis suppurativa is still unknown.
research A case of localized follicular hamartoma: an ultrastructural and immunohistochemical study
The hamartoma is an abnormal hair growth with limited development in the upper hair follicle.
research Distinguishing histopathologic features of acantholytic dermatoses and the pattern of acantholytic hypergranulosis
Different skin diseases show unique patterns of skin cell separation, cell death, and granular layer changes.
research TNF ‐inhibitor associated psoriatic alopecia: Diagnostic utility of sebaceous lobule atrophy
Shrinking of oil glands in the skin is a key sign of hair loss linked to TNF inhibitor drugs and may improve if the treatment is stopped.
research Expression of androgen receptor coactivator ARA70/ELE1 in androgenic alopecia
The protein ARA70/ELE1 is involved in male pattern baldness, and lower levels of its short form may lead to hair thinning.
research Distinctive histopathologic findings in linear morphea (en coup de sabre) alopecia
The study found unique skin changes in a rare type of alopecia linked to a skin condition called linear morphea.
research Alopecia areata but not androgenetic alopecia is characterized by a restricted and oligoclonal T-cell receptor-repertoire among infiltrating lymphocytes
Alopecia areata involves specific T-cells, unlike androgenetic alopecia.
research Quantitative study of the human hair follicle in normal scalp and androgenetic alopecia
Alopecia causes smaller hair follicles and affects growth-related structures.
research Chloracne: histopathologic findings in one case
Tiny infundibular cysts are the main lesions in chloracne, not comedones.
research Lectin‐binding profiles for normal skin appendages and their tumors
Skin tumors and normal skin structures have different lectin-binding patterns.
research The concept of the onychodermis (specialized nail mesenchyme): an embryological assessment and a comparative analysis with the hair follicle
The onychodermis helps anchor the nail bed and may aid in nail formation.
research P63 expression pattern during rat epidermis morphogenesis and the role of p63 as a marker for epidermal stem cells
P63 is a marker for epidermal stem cells in rats.
research Bubble hair
Bubble hair deformity may be caused by hair shaft trauma and can improve with gentle hair care.
research Stem cell apoptosis in HIV‐1 alopecia
HIV-1 may cause increased stem cell death in hair follicles, leading to hair loss.
research The microanatomy of the distal arrector pili: possible role for α1β1 and α5β1 integrins in mediating cell‐cell adhesion and anchorage to the extracellular matrix
The arrector pili muscle attaches to the extracellular matrix using α5β1 integrin and connects muscle cells using α1β1 integrin.