Publications by authors named "Ahmed AlHumidi"

Article Synopsis
  • Leishmaniasis is a protozoal infection that can manifest in three forms: cutaneous (CL), mucocutaneous (MCL), and visceral, with CL being the most common, but it can be hard to diagnose when lesions are diffuse.
  • A 54-year-old man with a history of MCL, systemic lupus erythematosus, and non-Hodgkin's lymphoma presented with widespread skin lesions, leading to the diagnosis of MCL with cellulitis after biopsy and PCR tests confirmed the presence of leishmania.
  • Despite having reliable diagnostic tests and treatment options like intravenous liposomal amphotericin B, the clinical suspicion for leishmaniasis can be challenging since its symptoms often mimic other
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  • Lichen sclerosus is a chronic skin condition affecting the genital area more commonly in postmenopausal women and prepubescent girls, with some patients experiencing extra-genital symptoms.
  • A case study details a 33-year-old woman with unusual lesions on her feet and hand, leading to a biopsy that confirmed extragenital lichen sclerosus.
  • The report emphasizes the rarity of this variant and the need for accurate diagnosis, aiming to improve awareness and research on lichen sclerosus and related skin diseases among healthcare professionals.
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  • H syndrome is an autosomal recessive disorder characterized by histiocytic proliferation, leading to various skin and systemic issues, with no effective treatment established, relying mostly on case reports.
  • A case study describes a 31-year-old Saudi woman whose H syndrome was initially misdiagnosed as meningitis and later as an autoimmune condition; she exhibited distinct skin lesions and other medical issues, including hearing loss and diabetes.
  • Attempts to treat her symptoms with methotrexate and imatinib were unsuccessful, highlighting the importance of recognizing H syndrome early to prevent irreversible damage and unnecessary treatment.
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Lichen planus (LP) is a common T-cell-mediated autoimmune skin disease, and its exact etiology is unknown. Typically, it affects the trunk, flexural surfaces, and the mucosa.We report a rare finding of LP involving both eyelids in a 67-year-old female.

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Background Herpes zoster (HZ) or shingles, arises from the reactivation of the varicella zoster virus (VZV), mainly affecting older and immunocompromised individuals. Despite the efficacy of vaccines, vaccination rates in Saudi Arabia are low. Thus, this study aimed to assess the knowledge, attitude, and practice of the Saudi Arabian population toward HZ and its vaccination.

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A 60-year-old woman presented with a history of a previously diagnosed sellar mass and a recent onset of severe headache, vision loss, and dizziness. The patient was found to have a large mass with curvilinear calcification on imaging. Histopathology confirmed the presence of a pituitary adenoma with abnormal acini, consistent with adenoma, and moderate amounts of granular eosinophilic cytoplasm.

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Background: Prurigo pigmentosa (PP), also referred to as Nagashima disease, is an acquired dermatological condition that is characterized by pruritic erythematous eruptions including papules and plaques surrounded by a reticular pattern of hyperpigmentation. It was first described in 1971 when Japanese dermatologist Masaji Nagashima noticed similar dermatological manifestations among 8 patients of Asian descent. The disease has been strongly associated with ketosis and ketogenic diet; however, the underlying etiology is unknown.

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Linear porokeratosis (LP) is an epidermal keratinization disorder manifesting in the form of annular plaques with an atrophic center and hyperkeratotic margins. Although rare, LP carries a significant risk of skin cancer. Histological examination usually reveals the cornoid lamella, a parakeratosis column visualized in the outer layer of the epidermis.

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BACKGROUND We report a case of a sporadic lumbar epidermoid cyst in a patient with no apparent risk factors for the condition. The lesion is considered an uncommon lesion that has a potentially debilitating effect on the spinal cord. CASE REPORT Our patient was a 17-year-old boy who presented to the neurosurgery clinic with lower back pain, accompanied by an electrical sensation radiating bilaterally to the buttocks, thighs, and knees.

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Physicians should be vigilant for COVID-19 vaccine side effects and investigate any associated cutaneous manifestations. This will ultimately facilitate better understanding and recognition of various skin reactions related to the vaccine.

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Prurigo nodularis (PN) is a chronic skin disease that manifests with severe itchy, firm, hyperkeratotic nodules distributed on the trunk and the extremities symmetrically. Here, we report a unique presentation of PN. A 26-year-old male presented with multiple itchy nodules over the hands and feet sparing the trunk, which were confirmed histologically as PN.

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Introduction And Importance: Ocular myxomas are very rare and can involve the orbit, eyelids, and conjunctiva. Conjunctival myxoma can be misdiagnosed as amelanotic nevus, conjunctival cyst, or ocular surface squamous neoplasia, among others. They can appear as an isolated lesion or can be associated with systemic manifestations as part of the Carney complex or Zollinger-Ellison syndrome.

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Article Synopsis
  • Granular parakeratosis (GP) is a rare skin disorder that shows up as scaly, reddish-brown papules that can merge into larger plaques, and is usually diagnosed through a biopsy.
  • A case study of a 47-year-old woman with GP highlighted her asymptomatic skin condition in the abdominal area, which resolved after one month of using emollients.
  • Due to the rarity and diverse presentation of GP, there’s no standard treatment, and its course can vary from spontaneous healing to periodic flare-ups.
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Erythema elevated diutinum (EED) is a rare distinctive form of cutaneous leukocytoclastic vasculitis. EED typically presents with asymptomatic symmetrical erythematous-brown papules, nodules or plaques which favor the extensor aspect of extremities while distinctly sparing the palms. We report two cases of EED with a rare presentation limited to the palms.

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It is extremely rare for malignant mesothelioma to present as gastrointestinal polyps. This case report documents the presentation of malignant mesothelioma in a 72-year-old as rectal bleeding and weight loss. Endoscopically, there were multiple gastric and colonic polyps.

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  • Kikuchi-Fujimoto disease (KFD) is a benign, self-limiting disorder characterized by symptoms like lymphadenopathy, fever, and fatigue, but its cause is unknown.
  • About one-third of patients with KFD experience skin lesions, though these are usually non-specific and not symmetrically distributed.
  • This case report discusses a patient with KFD who presented with bilateral symmetrical erosive lichen planus on the heel, suggesting a potential new link between the two conditions.
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