Ali Haydar Parlak

Alopecia areata in Turkey: demographic and clinical features

Background  Alopecia areata is a complex genetic disease with still many unknown aspects, and many studies have been tried to find some clues about it.

Persistent serpentine supravenous hyperpigmented eruption associated with docetaxel

Various mucocutaneous reactions have been reported with the use of systemic docetaxel. We describe a 47‐year‐old man who developed a persistent serpentine supravenous hyperpigmented eruption (PSSHE), beginning at the site of docetaxel injection and spreading along the superficial venous network in the anterior aspect of the right forearm and distal arm. The eruption occurred after the first infusion of docetaxel following insufficient venous washing. A second infusion was administered through a vein in the other forearm, but this time, abundant venous washing was performed and a similar eruption did not occur. To our knowledge, this is the second report of docetaxel‐induced supravenous discoloration and we discussed the terminology and mechanism of this unique reaction.

Ocular findings in patients with psoriasis

Background  Psoriasis is a chronic inflammatory disease affecting skin, nails, and joints. Although there are not many reports in the literature, ocular findings occur in approximately 10% of patients, in mostly those who have psoriatic arthritis. In this study, we aimed to evaluate eye involvement in psoriasis patients.

Dermatophytoses in forestry workers and farmers

To assess the frequency of superficial mycoses in forestry workers and farmers in the rural region of Duzce, a total of 467 residents of the rural region were examined for dermatomycosis infection. Of these, 349 were forestry workers and 118 farmers. All specimens collected were analysed by direct microscopy and culture. Tinea pedis et manus was found in 23 (19.4%), and onycomycosis in 21 (17.7%) farmers. Tinea pedis et manus was found in 50 (14.3%), and onycomycosis in 28 (8%) forestry workers. One tinea corporis, two tinea inguinalis and two erosio interdigitalis cases were determined in the farmer group but no cases of tinea corporis, tinea inguinalis, or erosio interdigitalis were found in the forestry group. In total, five tinea versicolor cases were found in the two groups on clinical examination but no agent positivity was yielded in mycological cultures. The most frequently isolated agent in the two groups was Trichophyton rubrum. The frequencies of superficial mycosis and onychomycosis were found to be higher in the farmer group than in the forestry group, although similar aetiological agents were isolated in both groups. The farmers had greater rates of contact with pathogenic fungi present in soil as well as from infected farm animals than the foresters; furthermore, animal husbandry, and the wearing of rubber shoes and nylon socks were more frequent in the farmer group. These results suggest that habits such as the wearing of rubber shoes and nylon socks, and the practice of animal husbandry may be the most important factors in determining the frequency of superficial mycoses and aetiological agents in forestry workers and farmers. To our knowledge, there is no previous report about dermatophytoses in forestry workers.

Measurement of epidermal thickness in a patient with psoriasis by computer-supported image analysis.

The aim of the present study was to measure full epidermal thickness, stratum corneum thickness, rete length, dermal papilla widening and suprapapillary epidermal thickness in psoriasis patients using a light microscope and computer-supported image analysis. The data obtained were analyzed in terms of patient age, type of psoriasis, total body surface area involvement, scalp and nail involvement, duration of psoriasis, and family history of the disease. The study was conducted on 64 patients and 57 controls whose skin biopsies were examined by light microscopy. The acquired microscopic images were transferred to a computer and measurements were made using image analysis. The skin biopsies, taken from different body areas, were examined for different parameters such as epidermal, corneal and suprapapillary epidermal thickness. The most prominent increase in thickness was detected in the palmar region. Corneal thickness was more pronounced in patients with scalp involvement than in patients without scalp involvement (t=-2.651, P=0.008). The most prominent increase in rete length was observed in the knees (median: 491 microm, t=10.117, P=0.000). The difference in rete length between patients with a positive and a negative family history was significant (t=-3.334, P=0.03), being 27% greater in psoriasis patients without a family history. The differences in dermal papilla distances among patients were very small. We conclude that microscope-supported thickness measurements provide objective results.

Collision tumour of trichofolliculoma and basal cell carcinoma

A 52‐year‐old woman presented with a 2‐year history of a reddish nodule on the right nasolabial sulcus. Histopathological examination revealed that the nodule was composed of trichofolliculoma and basal cell carcinoma. There was no transitional zone between the two neoplasms. The diagnosis was made as a collision tumour of trichofolliculoma and basal cell carcinoma.

Bilateral multiple piloleiomyomas on the breast

Piloleiomyomas are benign smooth muscle tumors arising from the erector pilorum muscles in the skin. They vary in size and number, and are often spontaneously painful or sensitive to touch and cold. In this paper, we present two young female patients who have multiple breast piloleiomyoma and discuss the related findings.

Preliminary study among truck drivers in Turkey: Effects of ultraviolet light on some skin entities

In this study, we aimed to compare driver (left) and opposite (right) sides for some skin entities in drivers. We also evaluated the effect of occupational duration, age and skin type among this population. One hundred and forty‐eight truck drivers were included in this study. Sun exposed areas were classified. Dermatological entities such as actinic keratosis, solar lentigo, seborrheic keratosis, melanocytic nevus, spider angioma, ephelid, basal cell carcinoma (BCC), squamous cell carcinoma, and melanoma were compared to driver and right sides. In addition, drivers were divided into two subgroups according to: (i) age (subgroups A1, 20–40 years, and A2, >40 years); (ii) occupational duration (subgroups O1, 1–10 years, and 02, >10 years); and (iii) skin type (subgroups S1, skin types I and II, and S2, skin types III and IV. Each of the two subgroups were compared with respect to the total prevalence (left and right sides) of lesions excluding the location. Seborrheic keratosis and lentigo solaris were found to be increased on the driver side of the face (P = 0.00) and ear (P = 0.013), respectively. Statistically significant increases of lesions on the driver side were determined according to the subgroups: melanocytic nevi were found to be increased on the driver side in A1 (P = 0.00), A2 (P = 0.00), O2 (P = 0.00), S1 (P = 0.00) and S2 (P = 0.006) groups; actinic keratoses were found to be significantly increased on the driver side in A2 and O2 groups (P = 0.03 for both).

Nevoid Hyperkeratosis of the Nipple and Areola: A Diagnosis of Exclusion

A 17-year-old woman presented with a 4 year history of hyperkeratotic and hyperpigmented lesions over both her nipples. She denied associated pain, pruritus, and discharge. The patient was not taking any medications and had never been pregnant. There was no personal or family history of any dermatologic diseases. Physical examination revealed brown verrucous plaques on both nipples (Fig. 1). The lesions were more prominent on the right-side nipple (Fig. 2). Baseline laboratory values were within normal limits and the patient appeared to be in good health. Bilateral ultrasonographic examination revealed nipple retraction and skin thickening of the areola (Fig. 3). Punch biopsy specimens were taken from the nipple lesions. Histopathologic evaluation showed hyperkeratosis, acanthosis, papillomatosis, and

Unilateral linear verrucous epidermal nevus of the face and the oral mucosa.

Verrucous epidermal nevi are linear hamartomas of epidermal structures that usually appear at birth or during infancy. They are usually found on the lower extremities and have resistance to treatment and risk of recurrence. They are rarely seen on the face and very rarely involve the oral mucosa. In the literature, only nine patients1–6 have been reported with the diagnosis of epidermal nevus involving oral mucosa since oral lesions were described by Brown and Gorlin7 in 1960. Here, we report a patient with an extensive verrucous epidermal nevus located on the face with intraoral extension.