Academic Literature
Postorgasmic-Illness-Syndrome Academic Literature
Welcome to the POIS-Network Literature Hub!
This page provides a curated collection of scientific publications on postorgasmic-illness-syndrome (POIS), including case reports, clinical observations, and review articles.
Since the first publication in 2002, a limited number of papers have been published. Most are small case studies, and large-scale research is still lacking.
We regularly update this section as new research emerges.
If you are aware of additional publications not listed here, please feel free to contact us.
[Case Report] Post-Orgasmic Illness Syndrome: Clinical Presentation, Psychosocial Impact, and Management Challenges Based on Two Case Reports
This preprint describes two patients with POIS who developed pronounced physical, cognitive, and psychological symptoms following ejaculation. Organic and allergic causes were ruled out. Multidisciplinary treatment approaches led to partial symptom improvement. The authors emphasize the significant psychosocial burden and the need for further research.
Gonçalves, A. S.; Santos, R. C.; Serra, S.; Teixeira, P. Post-Orgasmic Illness Syndrome: Clinical Presentation, Psychosocial Impact, and Management Challenges Based on Two Case Reports. Preprints 2025, 2025122600.
[Review] Postorgasmic illness syndrome
The study by Dorofeev & Krasnyak (2025) provides a review of the literature on postorgasmic illness syndrome (POIS) and presents a clinical case illustrating typical flu-like, cognitive, and autonomic symptoms after ejaculation. The authors conclude that POIS is likely polyetiological, involving immunological, neuroendocrine, and autonomic mechanisms.
[Systematic Review] Treatments for postorgasmic illness syndrome: a systematic review
Systematic review of POIS treatment approaches, summarizing current evidence on pharmacological and non-pharmacological interventions, with no established standard therapy.
[Case Report] A Role for IgE in Post-Orgasmic Illness Syndrome: Successful Omalizumab Treatment in Absence of Positive Skin Test to Self Semen
Case report of a 22-year-old man with postorgasmic-illness-syndrome (POIS), experiencing multi-system symptoms after ejaculation. The article reports complete symptom resolution with omalizumab despite negative semen allergy testing, suggesting a possible IgE- and mast cell–mediated mechanism.
[Registry Study] An International Prospective Registry of People with Postorgasmic Illness Syndrome
Prospective registry study on POIS based on patient-reported data from over 400 individuals, identifying common symptoms such as fatigue, cognitive impairment, and mood disturbances. The study also highlights frequent healthcare consultations, comorbid conditions, and the limited effectiveness of current treatment approaches.
[Review] Post-Orgasmic Illness Syndrome in Men: A Literature Review of a Challenging Condition
Review of postorgasmic-illness-syndrome (POIS), outlining symptoms, proposed mechanisms such as immune hypersensitivity and autonomic dysregulation, and current treatment options. The article emphasizes the substantial impact on quality of life and the limited evidence for long-term treatment strategies.
[Case Report] Post-orgasmic Illness Syndrome: A Case Report
Case report of a 25-year-old man with POIS, describing severe post-ejaculatory symptoms and limited response to standard treatments. The study reports symptom improvement with niacinamide, suggesting a potential alternative therapeutic option.
[Cohort Study] Postorgasmic illness syndrome: one or several entities? A retrospective cohort study.
Retrospective cohort study of POIS patients, examining symptom clusters, disease course, and treatment responses. The study highlights frequent general and cognitive symptoms, variability in diagnostic criteria, and only partial improvement with current treatment options.
[Survey Study] Recognition and practice patterns of sexual medicine experts towards postorgasmic illness syndrome.
International survey of sexual medicine experts on POIS, analyzing diagnostic perspectives and treatment strategies. The study shows limited knowledge, diverse assumptions about causes, and low overall treatment success rates.
[Case Report] Post-Orgasmic Illness Syndrome Successfully Treated with Omalizumab: A Case Report.
Case report of POIS with successful treatment using omalizumab, highlighting a potential immune-related mechanism and the role of targeted therapy in managing symptoms.
[Case Report] Flibanserin for Post-Orgasmic Illness Syndrome: A Case Report
Case report of POIS successfully managed with flibanserin and gabapentin, resulting in reduced symptom duration and severity. The study highlights a potential role of serotonin and neuroendocrine dysregulation in the pathophysiology of POIS.
[Case Series] Case series: expanding diagnostic markers in postorgasmic illness syndrome
Case series of POIS patients highlighting common symptoms, psychiatric comorbidities, and novel findings such as symptom onset during high arousal without ejaculation. The study suggests POIS may represent multiple underlying conditions rather than a single entity.
[Case Report] Post orgasmic illness syndrome successfully managed with antihistamine: A case report.
Case report of POIS successfully managed with a non-sedating antihistamine (fexofenadine), resulting in a marked reduction of symptoms and improved quality of life. The study supports a potential immune-mediated mechanism.
[Review] Postorgasmic Illness Syndrome: An Update.
Review of POIS outlining typical symptoms, impact on quality of life, and current treatment approaches. The article emphasizes the lack of understanding of underlying mechanisms and the absence of established long-term treatment options.
[Case Report] Novel treatment for post-orgasmic illness syndrome: a case report and literature review.
Case report of POIS treated with epididymectomy and vasoligation following unsuccessful medical treatment. The study suggests a possible immune-related mechanism and presents surgery as a potential option in selected, treatment-resistant cases.
[Cohort Study] Clinical experience with post-orgasmic illness syndrome (POIS) patients-characteristics and possible treatment modality.
Retrospective study of POIS patients describing symptom patterns, disease burden, and treatment responses. The study identifies fatigue as a key symptom and reports partial improvement in some patients, highlighting variability in treatment outcomes.
[Survey Study] Analysis of the Symptomatology, Disease Course, and Treatment of Postorgasmic Illness Syndrome in a Large Sample
Large patient-reported survey on POIS, examining symptom patterns, disease burden, and treatment approaches. The study highlights common symptoms such as fatigue and cognitive impairment, significant impact on daily life and sexual behavior, and inconsistent treatment outcomes.
[Case Report] Postorgasmic illness syndrome: potential new treatment options for a rare disorder
Case report of POIS with marked symptom improvement under alpha-blocker therapy, highlighting a potential role of sympathetic nervous system dysregulation. The study suggests that POIS may involve multiple underlying mechanisms beyond allergy.
[Case Report] Successful treatment of Post-orgasmic illness syndrome with human chorionic gonadotropin.
Case report of POIS associated with low testosterone, showing significant symptom improvement after treatment with human chorionic gonadotropin (hCG). The study highlights a possible hormonal contribution to POIS and supports endocrine evaluation in affected patients.
[Review] Post orgasmic illness syndrome: what do we know till now?
Comprehensive review of POIS describing its diagnostic framework (5 criteria, 7 symptom clusters), heterogeneous symptom presentation, and multiple competing pathophysiological hypotheses. Current treatments remain symptomatic (e.g., antihistamines, NSAIDs, SSRIs), with some evidence for hyposensitization therapy, but no established long-term management strategies exist.
[Review] First assessment of the validity of the only diagnostic criteria for postorgasmic illness syndrome (POIS).
Comprehensive review of POIS describing its diagnostic framework (5 criteria, 7 symptom clusters), heterogeneous symptom presentation, and multiple competing pathophysiological hypotheses. Current treatments remain symptomatic (e.g., antihistamines, NSAIDs, SSRIs), with some evidence for hyposensitization therapy, but no established long-term management strategies exist.
[Case Report] Negative allergy study in a case of postorgasmic illness syndrome (POIS).
Case report of a 30-year-old man with typical POIS symptoms. Extensive allergy testing (skin tests and immunological assays with autologous semen) was negative. No urological, hormonal, or neuropsychiatric cause was identified, suggesting a non-IgE-mediated mechanism and pointing toward possible neurobiochemical involvement.
[Review] Post orgasmic illness syndrome (POIS).
Narrative review describing POIS as a chronic condition with rapid onset of flu-like and cognitive symptoms after ejaculation, lasting 2–7 days. Proposes an autoimmune mechanism triggered by seminal fluid rather than sperm cells, with cytokine release as a key driver.
Waldinger MD. Post orgasmic illness syndrome (POIS). Transl Androl Urol. 2016 Aug;5(4):602-6.
[Case Report] Postorgasmic Illness Syndrome (POIS) in a Chinese Man: No Proof for IgE‐Mediated Allergy to Semen
Case report of the first diagnosed POIS patient in China. The patient showed positive skin reactions to autologous semen, but no detectable semen-specific IgE antibodies were found in serum. Similar skin reactions were observed in healthy controls, suggesting that IgE-mediated allergy is unlikely to explain POIS.
[Case Report] Hyposensitization Therapy with Autologous Semen in Two Dutch Caucasian Males: Beneficial Effects in Postorgasmic Illness Syndrome (Part 2)
Case report of two men with POIS treated with hyposensitization using autologous semen. Both showed significant symptom improvement (60% and 90%) over time, supporting an immunogenic mechanism and suggesting desensitization as a potential treatment approach.
[Case Series] Postorgasmic Illness Syndrome (POIS) in 45 Dutch Caucasian Males: Clinical Characteristics and Evidence for an Immunogenic Pathogenesis (Part 1)
Case series of 45 men with POIS establishing diagnostic criteria and symptom clusters. Most patients (88%) showed positive skin reactions to autologous semen, with symptoms typically starting within 30 minutes after ejaculation. Findings support an immunogenic (Type I and IV allergy) mechanism in a majority of cases.
[Case Report] Postorgasm Illness Syndrome—A Spectrum of Illnesses
Case report of two men with POIS-like symptoms showing different likely etiologies. One patient improved significantly with NSAIDs, suggesting a cytokine-mediated inflammatory mechanism, while the other case was linked to cultural/psychological factors (Dhat syndrome). Highlights that POIS may represent a spectrum of conditions requiring individualized treatment.
[Case Report] Postorgasmic Illness Syndrome: Two Cases.
First description of POIS based on two men with severe flu-like symptoms, fatigue, and myalgia occurring shortly after ejaculation and lasting several days. Symptoms were debilitating enough to cause avoidance of sexual activity. Etiology remained unknown, establishing POIS as a distinct clinical condition.