Internal Medicine Acronyms

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Internal Medicine Alphabet – F

S. No	Acronyms	Full Form	Short Explanation	Practical Example
F001	FAB	French–American–British Classification	Classification of leukemias and lymphomas.	FAB system used to subtype AML.
F002	FACS	Fluorescence-Activated Cell Sorting	Lab method to analyze/sort cells.	FACS used to separate CD4 T-cells.
F003	FAD	Flavin Adenine Dinucleotide	Coenzyme in oxidation-reduction reactions.	FAD acts as electron carrier in metabolism.
F004	FAI	Free Androgen Index	Ratio to assess androgen status.	Elevated FAI in PCOS diagnosis.
F005	FANA	Fluorescent Antinuclear Antibody	Autoimmune disease screening test.	FANA positive in lupus.
F006	FAP	Familial Adenomatous Polyposis	Inherited disorder with colon polyps.	FAP patient monitored for colorectal cancer.
F007	FAS	Fetal Alcohol Syndrome	Birth defects due to maternal alcohol use.	Child with growth delay diagnosed with FAS.
F008	FBC	Full Blood Count	Basic hematology panel.	FBC ordered in anemia.
F009	FBS	Fasting Blood Sugar	Blood glucose after fasting.	FBS ≥126 mg/dL indicates diabetes.
F010	FCE	Forced Cardiac Ejection	Cardiac contraction during systole.	Echo shows FCE abnormality.
F011	FCM	Flow Cytometry	Technique to analyze cell properties.	FCM used in lymphoma classification.
F012	FCS	Fetal Calf Serum	Supplement in cell culture media.	FCS used in laboratory cell growth.
F013	FDG	Fluorodeoxyglucose	Radiotracer in PET scans.	FDG uptake noted in cancer PET.
F014	FDP	Fibrin Degradation Products	Breakdown products of fibrin clot.	FDP elevated in DIC.
F015	FDR	First-Degree Relative	Family member sharing 50% genes.	Colonoscopy recommended if FDR has CRC.
F016	FEV1	Forced Expiratory Volume in 1 Second	Lung function parameter.	Low FEV1 in obstructive lung disease.
F017	FFP	Fresh Frozen Plasma	Plasma product for clotting factors.	FFP transfused in liver failure.
F018	FGR	Fetal Growth Restriction	Poor growth of fetus in utero.	Doppler shows FGR in pregnancy.
F019	FH	Family History	Genetic/medical background of relatives.	Patient with FH of diabetes screened early.
F020	FHH	Familial Hypocalciuric Hypercalcemia	Benign inherited calcium disorder.	FHH distinguished from primary hyperparathyroidism.
F021	FHR	Fetal Heart Rate	Monitoring heart rate of fetus.	CTG shows abnormal FHR.
F022	FISH	Fluorescence In Situ Hybridization	Genetic test for chromosomal abnormalities.	FISH detects BCR-ABL in CML.
F023	FIT	Fecal Immunochemical Test	Stool test for occult blood.	FIT positive → colonoscopy advised.
F024	FLD	Fatty Liver Disease	Accumulation of fat in liver.	FLD linked to obesity.
F025	FLT3	FMS-Like Tyrosine Kinase 3	Gene mutation in AML.	FLT3 mutation guides AML therapy.
F026	FMD	Fibromuscular Dysplasia	Arterial abnormality causing stenosis.	FMD diagnosed in young hypertensive woman.
F027	FML	Focal Myocardial Lesion	Localized heart muscle damage.	MRI showed FML after infarct.
F028	FNA	Fine Needle Aspiration	Biopsy method using thin needle.	FNA of thyroid nodule performed.
F029	FNG	Fungal Granuloma	Chronic fungal tissue infection.	Biopsy confirms FNG in lung.
F030	FNH	Focal Nodular Hyperplasia	Benign liver lesion.	FNH found incidentally on imaging.
F031	FOBT	Fecal Occult Blood Test	Stool screening for blood.	FOBT done in CRC screening.
F032	FPG	Fasting Plasma Glucose	Glucose after fasting, diabetes screen.	FPG ≥126 mg/dL diagnostic for diabetes.
F033	FRC	Functional Residual Capacity	Volume of air in lungs after normal exhalation.	FRC measured in pulmonary tests.
F034	FRF	Functional Residual Fraction	Pulmonary physiology measure.	FRF reduced in restrictive lung disease.
F035	FSH	Follicle-Stimulating Hormone	Hormone for reproductive function.	High FSH in menopause.
F036	FSP	Fibrin Split Products	Another term for FDP.	FSP elevated in DIC.
F037	FT3	Free Triiodothyronine	Active thyroid hormone fraction.	FT3 measured in thyroid disease.
F038	FT4	Free Thyroxine	Hormone level for thyroid function.	FT4 low in hypothyroidism.
F039	FTA-ABS	Fluorescent Treponemal Antibody-Absorption Test	Syphilis confirmatory test.	Positive FTA-ABS after RPR screening.
F040	FTD	Frontotemporal Dementia	Neurodegenerative disorder affecting behavior/language.	Early-onset dementia diagnosed as FTD.
F041	FTI	Free Thyroxine Index	Adjusted thyroid test result.	FTI useful in thyroid disease diagnosis.
F042	FUO	Fever of Unknown Origin	Persistent fever without cause.	FUO worked up with extensive labs.
F043	FVC	Forced Vital Capacity	Lung volume measurement.	Reduced FVC in restrictive lung disease.
F044	FXa	Factor Xa	Coagulation cascade enzyme.	FXa inhibited by apixaban.
F045	FXS	Fragile X Syndrome	Genetic cause of intellectual disability.	FXS confirmed by DNA testing.
F046	FZP	Fluorozepam	Benzodiazepine sedative drug.	FZP rarely used in modern practice.
F047	FTT	Failure to Thrive	Poor growth in infants/children.	Pediatric patient with FTT evaluated.
F048	FUS	Fused in Sarcoma Gene	Genetic marker in certain cancers.	FUS translocation seen in sarcomas.
F049	FVC%	Forced Vital Capacity Percent Predicted	Lung function % vs expected.	FVC% used in COPD staging.
F050	FXR	Farnesoid X Receptor	Nuclear receptor regulating bile acids.	FXR agonists tested in liver disease.
F051	FAE	Fetal Alcohol Effects	Partial syndrome from prenatal alcohol.	Child with learning issues diagnosed with FAE.
F052	FAN	Febrile Antinuclear Antibody	Screening autoimmune panel.	FAN used in lupus diagnosis.
F053	FBA	Foreign Body Aspiration	Inhalation of object into airway.	FBA confirmed in child with cough.
F054	FBE	Full Blood Examination	Another name for CBC.	FBE ordered for fatigue.
F055	FBN	Fibrillin	Structural protein in connective tissue.	FBN1 mutation in Marfan syndrome.
F056	FBP	Fructose-1,6-Bisphosphatase	Enzyme in gluconeogenesis.	FBP deficiency causes metabolic acidosis.
F057	FDC	Fixed Dose Combination	Drugs combined in one pill.	FDC used in TB treatment.
F058	FDFT	Farnesyl-Diphosphate Farnesyltransferase	Enzyme in cholesterol synthesis.	FDFT targeted in drug research.
F059	FDO	Functional Dyspepsia Overlap	GI disorder with mixed symptoms.	Patient with FDO presents with bloating.
F060	FDPD	Familial Parkinson’s Disease	Genetic form of Parkinson’s.	FDPD confirmed via genetic testing.
F061	FE	Fractional Excretion	Renal test to differentiate causes of AKI.	FE Na <1% suggests prerenal cause.
F062	FeNO	Fractional Exhaled Nitric Oxide	Marker of airway inflammation.	FeNO elevated in asthma.
F063	FES	Focal Epilepsy Syndrome	Subtype of seizure disorder.	MRI showed FES features.
F064	FFA	Free Fatty Acids	Circulating fats in blood.	Elevated FFA in metabolic syndrome.
F065	FGF	Fibroblast Growth Factor	Family of growth proteins.	FGF mutations linked to skeletal disease.
F066	FGN	Fibrillary Glomerulonephritis	Rare kidney disease.	Biopsy confirmed FGN.
F067	FGFR	Fibroblast Growth Factor Receptor	Receptor linked to cancers.	FGFR inhibitors tested in bladder cancer.
F068	FHF	Fulminant Hepatic Failure	Rapid severe liver failure.	Acetaminophen overdose caused FHF.
F069	FHRV	Fetal Heart Rate Variability	Variation in fetal heart rhythm.	Reduced FHRV seen in distress.
F070	FHS	Fetal Heart Sounds	Fetal heartbeat heard by stethoscope.	FHS audible at 20 weeks.
F071	FID	Functional Iron Deficiency	Inadequate iron despite stores.	FID in chronic kidney disease.
F072	FIGO	International Federation of Gynecology and Obstetrics	Cancer staging body.	FIGO staging used in cervical cancer.
F073	FIR	Fetal Inflammatory Response	Fetal systemic inflammation.	FIR linked to preterm labor.
F074	FISHER	Fisher Syndrome	Variant of Guillain-Barré with eye weakness.	Patient with ophthalmoplegia diagnosed with Fisher syndrome.
F075	FIT-DNA	Fecal Immunochemical Test with DNA	Colon cancer screening tool.	FIT-DNA positive → colonoscopy done.
F076	FLP	Fasting Lipid Profile	Cholesterol and triglycerides test.	FLP ordered in cardiovascular screening.
F077	FLT	Fluticasone	Inhaled corticosteroid drug.	FLT prescribed in asthma.
F078	FMDV	Foot-and-Mouth Disease Virus	Viral infection in livestock.	FMDV not human but relevant in zoonosis.
F079	FMF	Familial Mediterranean Fever	Genetic autoinflammatory disease.	FMF treated with colchicine.
F080	FMRP	Fragile X Mental Retardation Protein	Protein absent in Fragile X.	FMRP deficiency explains symptoms.
F081	FMS	Fibromyalgia Syndrome	Chronic pain disorder.	FMS causes diffuse musculoskeletal pain.
F082	FMT	Fecal Microbiota Transplant	Stool transplant to restore gut flora.	FMT used in recurrent C. difficile.
F083	FNA-B	Fine Needle Aspiration Biopsy	Needle sampling for pathology.	FNA-B performed on breast lump.
F084	FNGS	Fungal Next-Generation Sequencing	Molecular diagnosis of fungal infections.	FNGS confirmed invasive aspergillosis.
F085	FNHTR	Febrile Non-Hemolytic Transfusion Reaction	Fever during transfusion.	FNHTR resolved after transfusion stopped.
F086	FNP	Family Nurse Practitioner	Advanced practice nurse in primary care.	FNP manages hypertension patients.
F087	FNR	Fumarate Nitrate Reductase	Enzyme system in bacteria.	FNR studied in microbiology.
F088	FOXP3	Forkhead Box P3	Gene regulating immune tolerance.	FOXP3 mutations cause IPEX syndrome.
F089	FPGT	Fibrinogen Plasma Glycoprotein Test	Assay for clotting proteins.	FPGT abnormal in bleeding disorder.
F090	FPN	Ferroportin	Iron transport protein.	FPN mutations → hemochromatosis type 4.
F091	FPR	False Positive Rate	Diagnostic test metric.	High FPR reduces test reliability.
F092	FRAX	Fracture Risk Assessment Tool	Tool estimating 10-year fracture risk.	FRAX used in osteoporosis screening.
F093	FRCV	Functional Residual Capacity Volume	Expanded pulmonary measure.	FRCV reduced in restrictive disease.
F094	FSHR	Follicle-Stimulating Hormone Receptor	Hormone receptor in reproduction.	FSHR mutations cause infertility.
F095	FSI	Fasting Serum Insulin	Marker of insulin resistance.	FSI high in metabolic syndrome.
F096	FSL	Fasting Serum Lipids	Lipid test after fasting.	FSL ordered in CAD patient.
F097	FSR	Fetal Scalp Reaction	Response seen in labor monitoring.	FSR indicated distress.
F098	FTN	Fibrinogen Thrombin Network	Part of clotting cascade.	FTN disrupted in DIC.
F099	FTTN	Failure To Thrive in Neonates	Neonatal growth failure.	FTTN investigated with labs.
F100	FVC/FEV1	Ratio of FVC to FEV1	Spirometry measure for airway disease.	FVC/FEV1 <70% indicates obstruction.

S. No	Acronyms	Full Form	Short Explanation	Practical Example
F101	FADH2	Flavin Adenine Dinucleotide (Reduced)	Electron carrier in mitochondrial respiration.	FADH2 donates electrons in the ETC.
F102	FAERS	FDA Adverse Event Reporting System	Database for monitoring drug side effects.	New drug linked to FAERS safety reports.
F103	FAIH	Fulminant Autoimmune Hepatitis	Severe rapid-onset autoimmune liver failure.	FAIH treated with steroids.
F104	FAL	Focal Active Lesion	Histologic finding in GI biopsy.	FAL noted in colonoscopy biopsy.
F105	FAM	Familial Adenomatous Mutation	Genetic mutation linked to colon cancer.	APC mutation is a common FAM.
F106	FANCA	Fanconi Anemia Complementation Group A	Gene mutation causing Fanconi anemia.	FANCA defect confirmed by genetic test.
F107	FAPB	Fatty Acid-Binding Protein	Biomarker for myocardial injury.	Elevated FAPB suggests early MI.
F108	FARS	Food and Drug Administration Risk Strategy	Safety strategy for high-risk drugs.	FARS applied in biologic therapy.
F109	FAST	Focused Assessment with Sonography in Trauma	Bedside ultrasound for trauma.	FAST exam used in ER for bleeding detection.
F110	FAZ	Foveal Avascular Zone	Area in retina without vessels.	FAZ enlarged in diabetic retinopathy.
F111	FBCM	Full Blood Cell Morphology	Microscopic look at blood cells.	FBCM revealed sickle cells.
F112	FBSS	Failed Back Surgery Syndrome	Chronic pain after spinal surgery.	FBSS managed with pain therapy.
F113	FCD	Focal Cortical Dysplasia	Abnormal brain development → seizures.	FCD confirmed on MRI in epilepsy patient.
F114	FCHL	Familial Combined Hyperlipidemia	Genetic disorder with high cholesterol.	FCHL increases CAD risk.
F115	FCI	Functional Cardiac Imaging	Imaging to assess cardiac function.	FCI used in heart failure patients.
F116	FCMR	Fc Receptor for IgM	Immunological receptor.	FCMR studied in autoimmune disease.
F117	FCP	Fecal Calprotectin	Marker of intestinal inflammation.	FCP elevated in Crohn’s disease.
F118	FCSRT	Free and Cued Selective Reminding Test	Memory assessment test.	FCSRT used in Alzheimer’s evaluation.
F119	FDCW	Fixed Drug Combination Weight	Regulatory drug dosage term.	FDCW noted in TB medication.
F120	FDPG	Fibrinogen Degradation Product Globulin	Marker of clot breakdown.	FDPG measured in coagulopathy.
F121	FEAST	Fluid Expansion As Supportive Therapy	Trial studying fluids in sepsis.	FEAST trial influenced pediatric resuscitation.
F122	FEF25–75	Forced Expiratory Flow 25–75%	Lung function measure of mid-airway flow.	Low FEF25–75 in asthma.
F123	FEIBA	Factor Eight Inhibitor Bypass Activity	Hemophilia treatment agent.	FEIBA given to bleeding hemophiliac.
F124	FEME	Full Examination of Microscopic Elements	Urine microscopy exam.	FEME performed in suspected UTI.
F125	FER	Ferritin	Protein storing iron.	Low FER in iron deficiency anemia.
F126	FESR	Fetal Erythrocyte Sedimentation Rate	Blood marker in pregnancy.	FESR monitored in maternal anemia.
F127	FEV6	Forced Expiratory Volume in 6 Seconds	Spirometry measure.	FEV6 alternative to FVC.
F128	FFAIR	Free Fatty Acid Insulin Resistance	Measure of insulin sensitivity.	FFAIR elevated in metabolic syndrome.
F129	FFPE	Formalin-Fixed Paraffin-Embedded	Tissue preservation method.	FFPE block used for biopsy analysis.
F130	FFT	Fast Fourier Transform (ECG Analysis)	Mathematical tool for ECG signal.	FFT used in arrhythmia studies.
F131	FGID	Functional Gastrointestinal Disorder	Non-structural GI symptoms.	IBS is a common FGID.
F132	FGRS	Familial Genetic Risk Score	Polygenic risk estimation.	FGRS calculated for T2DM.
F133	FHIT	Fragile Histidine Triad Gene	Tumor suppressor gene.	FHIT loss linked to lung cancer.
F134	FHRM	Fetal Heart Rate Monitoring	Continuous assessment of fetus in labor.	FHRM showed late decelerations.
F135	FIAU	Fialuridine	Antiviral drug withdrawn for toxicity.	FIAU caused severe liver failure.
F136	FIC	Fractional Inhibitory Concentration	Antibiotic combination index.	FIC used in antimicrobial synergy testing.
F137	FIDP	Familial Idiopathic Dilated Cardiomyopathy	Inherited form of dilated cardiomyopathy.	FIDP confirmed by family history.
F138	FIGLU	Formiminoglutamic Acid	Urine metabolite elevated in folate deficiency.	High FIGLU in folate deficiency.
F139	FIL	Feline Immunodeficiency-Like Virus	Retrovirus model for HIV.	FIL studied in animal research.
F140	FIP	Familial Interstitial Pneumonia	Genetic form of interstitial lung disease.	FIP diagnosed via HRCT.
F141	FISH-T	Fluorescence In Situ Hybridization for Translocations	Cytogenetic cancer testing.	FISH-T detected t(9;22).
F142	FKBP	FK506 Binding Protein	Immunophilin involved in calcineurin inhibition.	FKBP targeted by tacrolimus.
F143	FLC	Free Light Chains	Kappa and lambda immunoglobulin chains.	FLC ratio abnormal in multiple myeloma.
F144	FLD-P	Fatty Liver Disease–Progressive	Advanced stage fatty liver.	FLD-P progressed to cirrhosis.
F145	FLG	Filaggrin	Protein for skin barrier.	FLG mutation linked to eczema.
F146	FLIPI	Follicular Lymphoma International Prognostic Index	Risk score for follicular lymphoma.	FLIPI used in oncology treatment planning.
F147	FLS	Fibroblast-Like Synoviocyte	Cell involved in rheumatoid arthritis.	FLS proliferation drives joint damage.
F148	FLT	Fms-Like Tyrosine Kinase	Receptor for VEGF.	FLT-3 inhibitors used in AML.
F149	FMCA	Familial Medullary Carcinoma of Thyroid	Inherited thyroid cancer.	FMCA confirmed via RET mutation.
F150	FMDV-H	Foot-and-Mouth Disease Virus–Human Interaction	Research model for zoonotic disease.	FMDV-H studied for cross-species risk.
F151	FME	Forced Mid-Expiratory Flow	Spirometry measurement.	FME reduced in small airway disease.
F152	FMISO	Fluoromisonidazole	Hypoxia PET tracer.	FMISO uptake measured in tumor imaging.
F153	FMP	Fetal Movement Profile	Prenatal assessment of fetal activity.	Abnormal FMP → further testing needed.
F154	FMR	Functional Mitral Regurgitation	Valve regurgitation without structural defect.	FMR noted in dilated cardiomyopathy.
F155	FMS-Like	FMS-Like Tyrosine Kinase	Alternate FLT receptor.	FMS-Like mutation linked to leukemia.
F156	FMTVDM	FMTVDM Nuclear Imaging Quantification	Method for heart disease detection.	FMTVDM used in CAD evaluation.
F157	FNAc	Fine Needle Aspiration Cytology	Cytology after aspiration.	FNAc performed on breast nodule.
F158	FNB	Fine Needle Biopsy	Tissue sampling procedure.	FNB of lung lesion confirmed cancer.
F159	FNGP	Fibrinogen Gene Polymorphism	Genetic variants affecting clotting.	FNGP linked to thrombotic risk.
F160	FNHT	Familial Non-Hodgkin’s Lymphoma	Inherited risk of lymphoma.	FNHT observed in family pedigree.
F161	FNRR	Fractional Non-Responder Rate	% of patients not responding to therapy.	FNRR calculated in trial outcomes.
F162	FOA	Familial Optic Atrophy	Inherited optic nerve degeneration.	FOA mutation found in child with vision loss.
F163	FOI	Focus of Infection	Source of systemic infection.	Tooth abscess was FOI in septicemia.
F164	FOLFOX	Folinic Acid, 5-FU, Oxaliplatin	Chemotherapy regimen.	FOLFOX given for colon cancer.
F165	FOMC	Familial Oral Mucosal Carcinoma	Genetic oral cancer syndrome.	FOMC noted in family study.
F166	FOP	Fibrodysplasia Ossificans Progressiva	Rare disorder with ectopic bone growth.	FOP diagnosed via ACVR1 mutation.
F167	FOR	Fraction of Responders	Measure in clinical trials.	FOR calculated for biologic therapy.
F168	FOS	Fos Proto-Oncogene	Transcription factor in cell signaling.	FOS expression elevated in tumors.
F169	FOT	Forced Oscillation Technique	Pulmonary diagnostic method.	FOT used in asthma monitoring.
F170	FOXO	Forkhead Box O	Family of transcription factors.	FOXO linked to insulin regulation.
F171	FP-CIT	Fluoropropyl-Carbomethoxy Iodophenyl Tropane	PET tracer for dopamine transporters.	FP-CIT scan used in Parkinson’s.
F172	FPIN	Family Physicians Inquiries Network	Evidence-based practice network.	FPIN provides clinical answers to GPs.
F173	FPL	Familial Partial Lipodystrophy	Genetic fat distribution disorder.	FPL linked to insulin resistance.
F174	FPRP	False Positive Report Probability	Statistical measure in genetic studies.	FPRP calculated to validate findings.
F175	FPT	Free Prostate-Specific Antigen Test	PSA subtype test for cancer.	FPT helps differentiate BPH vs cancer.
F176	FRAT	Fructose Tolerance Test	Diagnostic test for fructose metabolism.	FRAT positive in hereditary fructose intolerance.
F177	FRDA	Friedreich’s Ataxia	Genetic neurodegenerative disease.	FRDA confirmed by GAA repeat test.
F178	FRN	Familial Renal Neoplasia	Genetic predisposition to kidney tumors.	FRN found in VHL families.
F179	FRP	Fibrous Root Pulmonary Lesion	Rare lung fibrotic lesion.	FRP biopsied for pathology.
F180	FRS	Framingham Risk Score	Tool to predict cardiovascular risk.	FRS used in primary prevention.
F181	FRT	Fractional Reabsorption Test	Kidney tubular function test.	FRT performed in AKI.
F182	FRU	Fructosuria	Benign excretion of fructose in urine.	FRU detected on urinalysis.
F183	FSHD	Facioscapulohumeral Dystrophy	Genetic muscular dystrophy.	FSHD diagnosed in young adult.
F184	FSLP	Fecal Short-Chain Lipid Profile	Gut microbiome biomarker.	FSLP altered in IBD.
F185	FSME	FrühSommerMeningoEnzephalitis	Tick-borne viral infection.	FSME vaccine used in endemic areas.
F186	FSPGR	Fast Spoiled Gradient Echo	MRI sequence.	FSPGR used in brain imaging.
F187	FSS	Functional Somatic Syndrome	Physical symptoms without clear disease.	FSS includes fibromyalgia.
F188	FST	Follicle-Stimulating Test	Reproductive hormone test.	FST ordered in infertility.
F189	FTLD	Frontotemporal Lobar Degeneration	Neurodegenerative disease subtype.	FTLD confirmed via MRI.
F190	FTO	Fat Mass and Obesity-Associated Gene	Gene linked to obesity.	FTO variant associated with BMI.
F191	FTR	Functional Tricuspid Regurgitation	Valve regurgitation without structural lesion.	FTR seen in RV dilation.
F192	FTZ	Fetal Transition Zone	Part of fetal development.	FTZ identified in neonatal MRI.
F193	FUM	Fumarase	Krebs cycle enzyme.	FUM deficiency causes encephalopathy.
F194	FUP	Follow-Up	Ongoing patient management.	FUP arranged after hospital discharge.
F195	FUS3	Fused Sarcoma Gene 3	Oncogene in tumors.	FUS3 mutation found in sarcoma biopsy.
F196	FVCin	Inspiratory Forced Vital Capacity	Lung capacity measure.	FVCin reduced in neuromuscular disease.
F197	FVII	Factor VII	Coagulation factor.	FVII deficiency leads to bleeding disorder.
F198	FVIII	Factor VIII	Coagulation factor deficient in hemophilia A.	FVIII infusion given to hemophiliac.
F199	FVL	Factor V Leiden	Genetic mutation causing thrombophilia.	FVL testing ordered in recurrent DVT.
F200	FXTAS	Fragile X–Associated Tremor/Ataxia Syndrome	Neurodegenerative disorder in older men.	FXTAS diagnosed in Fragile X carrier.