10-Year Study Highlights Skin Issues in Kidney Transplant Patients

Introduction

A recent 10-year retrospective cross-sectional study offers a deep look at skin problems that affect people who have had a kidney transplant, also called renal transplant recipients (RTRs). (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al., “Prevalence and Clinical Spectrum of Dermatologic Conditions in Renal Transplant Recipients”).

Because a kidney transplant is the preferred treatment for end-stage kidney disease, many patients live long-term with suppressed immune systems to protect the new organ, which changes their risk for skin disease. (Source: National Kidney Foundation, “Kidney Transplant Overview”).

Study setting and why it matters

The study was conducted at a tertiary care center in Riyadh, Saudi Arabia, and included 338 adult RTRs who had dermatologic evaluations between 2015 and 2025. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

These real-world clinic data are valuable for dermatologists and transplant teams because they reflect the range of skin issues seen over a decade in a non-Western population, where patterns of disease and sun exposure may differ from those commonly reported in Western cohorts. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Study population and immunosuppression

The group was roughly balanced by sex, with about 51.5% female patients and a mean age near 35 years, reflecting a relatively young transplant cohort. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Nearly all patients were on long-term immunosuppressive regimens, most commonly a combination that included corticosteroids, tacrolimus, and mycophenolate, medications whose purpose is to prevent graft rejection but which also alter normal immune defenses. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.; KDIGO Clinical Practice Guideline for Kidney Transplantation).

Because these drugs suppress cell-mediated and other immune responses, RTRs are uniquely prone to infections, inflammatory reactions, drug-related skin changes, hair and nail disorders, and skin cancers—making dermatologic surveillance a routine part of transplant care. (Source: KDIGO Clinical Practice Guideline for Kidney Transplantation; Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Overall prevalence of dermatologic conditions

Dermatologic conditions were common in this cohort: the study found a high burden of skin disease across multiple categories, underscoring that skin care needs are a frequent and ongoing issue after kidney transplantation. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

The single largest category was infectious dermatoses, which affected 37.3% of patients in the study—highlighting how immunosuppression increases susceptibility to microbes that the immune system usually controls. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Infectious skin conditions

Within the infectious group, viral warts were the most frequent problem, accounting for more than 40% of infections observed. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Other common infectious diagnoses included superficial fungal infections and folliculitis, consistent with impaired control of fungal and bacterial organisms when immune surveillance is reduced. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Clinically, infections in RTRs often:

• are more extensive than in people with normal immunity,

• recur more frequently, and

• may respond unpredictably to standard treatment courses, sometimes requiring longer or combination therapies.

The authors recommend a low threshold for diagnostic confirmation—such as bacterial cultures and potassium hydroxide (KOH) preparations—and anticipation that therapy durations may need to be extended. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Inflammatory skin conditions

Inflammatory disorders were the second most common category, affecting about 24% of patients. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Acne was the most frequent inflammatory diagnosis, making up roughly 42% of inflammatory cases, followed by lichen simplex chronicus and prurigo nodularis. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Many inflammatory presentations were linked to the medications used to prevent rejection. For example, steroid-induced acne was a common drug-related phenomenon noted in the cohort. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Drug-related dermatologic conditions

Overall, approximately 12.4% of cases were attributed to drug-induced skin reactions, with corticosteroids frequently implicated. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Beyond acneiform eruptions, clinicians observed drug-related pruritus and various hypersensitivity reactions, reminding providers to consider medication side effects in the differential diagnosis of new skin complaints. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Hair and nail disorders

Hair disorders affected about 11.5% of patients, with telogen effluvium being the most common, followed by alopecia areata and androgenetic alopecia. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Women in this study had more than four times the odds of experiencing hair disorders compared with men, a notable sex-specific finding that may guide counseling and monitoring. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Nail disorders were reported less often, though the authors caution these may be underreported in routine clinic notes; careful inspection during visits can reveal subtle nail changes related to medications or systemic illness. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Neoplastic (tumor) conditions

Although neoplastic skin conditions were less common overall (5.9%), they carry serious implications because of the potential for aggressive behavior in immunosuppressed patients. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

The most frequent benign lesion in this group was seborrheic keratosis, while the most common skin cancers were squamous cell carcinoma (SCC) and basal cell carcinoma (BCC). (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Importantly, every additional year of age was associated with an approximately 10% increase in the odds of neoplastic disease, supporting the need for age-sensitive skin cancer surveillance for RTRs—even in regions where baseline population skin cancer rates differ from Western countries. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Other dermatologic findings

The study also recorded conditions such as xerosis (dry skin), pruritus without primary lesions, and keloids, which can reflect medication side effects, chronic inflammation, or the underlying systemic disease that led to transplantation. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Diagnosis, treatment, and outcomes

From a diagnostic standpoint, most conditions—about 86.7%—were identified by clinical examination alone, emphasizing the value of thorough skin checks during routine transplant follow-up. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Topical therapies were the most commonly used treatments and were associated with higher rates of apparent resolution compared with systemic or surgical approaches, reflecting both the predominance of superficial disease and clinicians’ preference for localized management when possible. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Overall, roughly one-third of dermatologic conditions resolved within the follow-up recorded in the study, while a smaller portion persisted or recurred, highlighting the chronic and relapsing nature of some post-transplant skin problems. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Risk factors and what predicted certain conditions

The investigators analyzed potential predictors and found that age and sex were more informative for risk stratification than transplant-related variables such as donor type or time since transplantation. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Specifically, age was a strong independent predictor for neoplastic disease, and female sex was associated with higher odds of hair disorders—findings that can help clinicians prioritize screening and counseling. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Notably, neither the source of the kidney (living vs deceased donor) nor the interval from transplant to first dermatologic diagnosis showed a clear link to the type of skin condition identified, suggesting that individual patient factors and medication effects may be more critical drivers. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Clinical implications for dermatologists and transplant teams

For dermatologists who care for transplant patients, the study reinforces several practical points:

• Maintain a high index of suspicion for infections, especially viral warts and fungal disease, and use appropriate diagnostic tests when presentations are atypical. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

• Anticipate medication-related effects such as steroid acne and drug hypersensitivity, and review immunosuppressive regimens in collaboration with transplant teams when skin side effects are severe. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.; KDIGO Clinical Practice Guideline for Kidney Transplantation).

• Perform regular skin cancer surveillance, particularly in older patients, and consider tailored follow-up plans based on age and individual risk. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Limitations and context

The authors note that this was a single-center, retrospective review focused on patients referred for dermatologic evaluation, which can introduce referral bias and may not capture mild or unreported conditions in the broader RTR population. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Nonetheless, because the study spans 10 years and captures a wide range of presentations, it provides clinically meaningful data that can inform local practice and supplement findings from Western cohorts. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Final thoughts

This 10-year analysis highlights that skin problems are common and often complex after kidney transplantation, driven by immunosuppressive therapy and individual patient factors such as age and sex. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).

Routine, thorough dermatologic assessment, prompt diagnostic testing for suspicious infections or lesions, and close coordination between dermatology and transplant teams are practical steps to improve outcomes for renal transplant recipients living with cutaneous disease. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.; National Kidney Foundation).

Sources

1. Clin Cosmet Investig Dermatol, Alrubaiaan MT, Almutairi AA, Altuwaijri LM, et al. “Prevalence and Clinical Spectrum of Dermatologic Conditions in Renal Transplant Recipients: A 10-Year Retrospective Cross-Sectional Study.” Published 2026 Apr 7. (Source: Clin Cosmet Investig Dermatol, Alrubaiaan et al.).
2. National Kidney Foundation. “Kidney Transplant Overview.” (Source: National Kidney Foundation, Kidney Transplant Overview).
3. KDIGO Clinical Practice Guideline for the Care of Kidney Transplant Recipients. (Source: KDIGO Clinical Practice Guideline).
4. Urol Ann, Fitzpatrick J, Chmelo J, Nambiar A, et al. “Recipient outcomes in total laparoscopic live donor nephrectomy with multiple renal vessels.” (Referenced in original article). (Source: Urol Ann, Fitzpatrick et al.).