Skin Appendage Disorders

INTRODUCTION: Treatment of nail psoriasis is challenging. Systemic therapies may be difficult to justify, while topical therapies may be sup-optimal. Triamcinolone acetonide (TA) injections are recommended as first-line therapy in cases with less than 3 nails involved; however, limited studies are available. This study was conducted to evaluate the reduction in NAPSI (Nail Psoriasis Severity Index) with TA injections in patients with isolated nail psoriasis. METHODS: A retrospective case record analysis of efficacy and safety of TA (5 mg/mL) nail injections (4-weekly for fingernails, 8-weekly for toenails) was done in 10 patients...

INTRODUCTION: Periarticular thenar erythema with onycholysis (PATEO) syndrome is a rare subtype of hand-foot syndrome seen in patients undergoing taxane-based chemotherapy. It presents as erythematous to violaceous plaques on the dorsum of hands, feet, and around the Achilles tendon along with nail changes, particularly onycholysis. CASE PRESENTATION: A 39-year-old female on paclitaxel chemotherapy for stage IIIA (T3N2aM0) invasive ductal breast carcinoma, presented with mildly tender erythematous to violaceous plaques involving the dorsa of bilateral hands and feet, in the periarticular areas of the Achilles tendon, with facial involvement...

INTRODUCTION: Erosive pustular dermatosis of the scalp (EPDS) is a rare and recalcitrant condition in which chronic scalp pustules and erosive patches are diagnosed by nondiagnostic laboratory tests and histopathological tests. Although various precipitating factors including trauma have been reported, erosive pustular dermatosis arising on the long-standing burn scars is rare. CASE PRESENTATION: We report three cases of EPDS arising on long-standing burn scars...

BACKGROUND: Nail psoriasis is a common condition that affects quality of life in individuals with psoriasis and psoriatic arthritis. Topical treatments have been shown to be effective in treating nail bed disease but not as effective in treating nail matrix diseases, which often requires intralesional corticosteroids. OBJECTIVES: The objective of this open-label study was to evaluate the efficacy of combination calcipotriol/betamethasone dipropionate foam as a treatment for nail psoriasis including nail matrix disease...

Acne is a chronic inflammatory disease of the pilosebaceous unit with a multifactorial etiology and is one of the most common conditions treated by dermatologists and primary care physicians. Within an extensive and evolving treatment landscape, oral isotretinoin has demonstrated efficacy for treatment of severe, recalcitrant acne. Several side effects of isotretinoin have been reported, including laboratory abnormalities, mucocutaneous, and musculoskeletal effects, which may reduce compliance and patient satisfaction with treatment...

Low-dose oral minoxidil (LDOM) has demonstrated a promising safety and efficacy profile in the treatment of various hair disorders, including male androgenetic alopecia (AGA) and female-pattern hair loss (FPHL); however, it lacks FDA approval. The usual LDOM starting dose for male AGA is 1-5 mg/day, depending on physician preference and the patient's condition. For FPHL, it is 0.5-1 mg/day. The maximum dose is generally 5 mg/day. If patients respond well without major side effects, the dose may be gradually increased since the LDOM's efficacy appears to be dose-dependent...

INTRODUCTION: Bony subungual growths arising on the digital tip are uncommon. Among these, subungual exostosis is a common cause. CASE PRESENTATION: We describe a 35-year-old-male patient with a rare occurrence of a fibro-osseus pseudotumor of the digit. It presents with reactive intramembranous ossification, with no continuity with the distal phalanx, helping differentiate it from a subungual exostosis. The patient presented with an asymptomatic subungual growth, lifting up the nail plate distally causing onycholysis...

INTRODUCTION: Plica neuropathica (PN) is a rare, acquired, and irreversible condition characterized by the formation of a compacted mass of tangled hair held together by a hard keratin cement. CASE PRESENTATION: In case 1, a 50-year-old woman with history of contact dermatitis of the scalp presented with hair tangling and difficulty combing. Physical examination revealed a matted mass of hair with a dirty appearance and non-scarring alopecia. Case 2 involved a 46-year-old woman who experienced spontaneous hair matting after using various products, resulting in a dreadlock-like appearance...

BACKGROUND: Combination treatments may improve the utility of approved agents for the treatment of pattern hair loss (PHL); however, head-to-head comparisons are lacking. OBJECTIVE: The aim of the study was to compare the efficacy of 5% minoxidil, platelet-rich plasma (PRP), and microneedling across adults with PHL insofar as change in total hair density at 24 weeks. METHODS: We conducted a literature search in July 2022. Through our Bayesian network meta-analysis, we estimated treatments' surface under the cumulative ranking distribution (SUCRA) values and relative effects - in terms of mean difference (MD)...

INTRODUCTION: Transverse melanonychia, characterized by grey to black pigmented bands traversing the nail plate, can occur as a side-effect of certain medications. While no documented reports specifically associate dasatinib, a tyrosine kinase inhibitor used in the treatment of chronic myeloid leukaemia (CML) and acute lymphoblastic leukaemia, with nail changes, we present a case of transverse melanonychia possibly related to dasatinib therapy. CASE REPORT: A 54-year-old male with CML, receiving dasatinib for 1...

Sensitive scalp (SSc) is considered a sensitive skin on the scalp, with its particularities. Although it is not rare in the dermatological practice and the term is commonly present in personal care products, this entity is poorly investigated in the medical literature. The etiopathogenesis is still uncertain, and the sensitivity may be associated with hair loss. Clinical manifestations are subjective symptoms of pruritus, burning, pain, pricking, and/or trichodynia, often with scalp erythema. SSc can be triggered by several factors (endogenous or exogenous)...

INTRODUCTION: Fixed drug eruptions (FDEs) are cutaneous hypersensitivity reactions due to an offending drug and are rarely associated with nail involvement. Moreover, FDEs associated with fluconazole use are sparsely reported in literature. CASE PRESENTATION: We report a case of a recurrent FDE with involvement of one finger and corresponding Beau's lines due to fluconazole use. The diagnosis of FDE secondary to fluconazole use was confirmed histopathologically, with improvement after the application of twice daily 0...

BACKGROUND: Onychomycosis is the most frequently diagnosed nail condition in clinical practice. With the growing popularity of TikTok and online health information-seeking behavior, it is imperative to understand onychomycosis-related content on this platform. OBJECTIVE: Our objective was to assess content and quality of the most popular onychomycosis-related content on TikTok. METHODS: We queried TikTok for videos using the search terms "onychomycosis" and "nail fungus" for the top 100 videos by view count, with DISCERN scoring used to rate videos for quality...

INTRODUCTION: The Spitz nevus (SN) is an acquired melanocytic neoplasm composed of epithelioid and/or spindle cells, which tends to develop in childhood. In pediatric patients, it is usually located on the face and neck. Unusual locations have been found in the literature, such as the penis, mouth, and tongue, as well as 2 cases of ungual SN. CASE REPORT: A 15-year-old male evaluated for dark brown-black longitudinal melanonychia that covered 40% of the nail, with pseudo-Hutchinson's sign, of 1 year of evolution...

INTRODUCTION: Treatment of hidradenitis suppurativa (HS) is challenging, and in Hurley stage I, it is based on topical measures. Our aim was to compare the efficacy and safety of topical resorcinol 10% with topical clindamycin 1% and no therapy, in Hurley stage I HS. METHODS: In this open, prospective, randomized trial, we studied 60 Hurley stage I patients with IHS4 ≤10. Group A was treated with topical resorcinol 10%; group B with clindamycin lotion 1%; and group C received no treatment...

INTRODUCTION: Kaposi sarcoma is an angioproliferative neoplasm. Its manifestations are well known but nail involvement seems extremely underreported. CASE PRESENTATION: A 55-year-old man presented with a 6-month history of a growing subungual tumor affecting the third right toe. After surgical excision, histological examination revealed a Kaposi sarcoma. DISCUSSION: We report a case of Kaposi sarcoma with nail involvement of only one toe as the first and unique manifestation, which is exceptional...

Hydroxychloroquine (HCQ) is an antimalarial that is utilized to treat a range of dermatologic and autoimmune disorders. With its ability to alter immunologic mechanisms, it has been used to slow or halt the progression of hair loss in conditions secondary to autoimmune dysfunction. Lichen planopilaris (LPP), frontal fibrosing alopecia (FFA), and alopecia areata (AA) are hair disorders with underlying autoimmune components and no standardized treatment guidelines. We summarized the available literature on the use of HCQ to treat LPP, FFA, and AA...

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INTRODUCTION: Inflammatory tinea capitis (TC) is uncommon in adults. CASE PRESENTATION: A 29-year-old healthy woman presented with a 2-year history of scalp alopecia with purulent discharge. Clinical, trichoscopic, and histological features and the negativity of a first fungal sampling were consistent with the diagnosis of dissecting cellulitis of the scalp. A second mycological examination guided by trichoscopy was carried out, showing tinea endothrix. Fungal culture isolated trichophyton violaceum...

The use of low-light laser therapy to treat androgenetic alopecia is a promising modality to restore hair growth. However, the effect of skin color on response to laser therapy for hair growth has not been systematically explored in the literature. The objective of this study is to systematically assess through a comprehensive literature search of the MEDLINE database whether skin type data were collected in clinical trials and analyzed in each study and determine if we can estimate an effect. 10/22 studies have defined inclusion criteria as Fitzpatrick skin types I-IV...