White blood cell count, decreased
More common causes
Vitamin B12 deficiency
Lymphoma
Sepsis and septic shock
Hepatitis B virus infection
Neutropenia
Influenza virus infection
Tick borne encephalitis
Less common causes
Systemic lupus erythematosus
Splenomegaly
Myeloproliferative disorders
Epstein-Barr virus infection
Felty's syndrome
Complication of chemotherapy
Leukemia
Myelodysplastic syndrome
Herpes simplex virus infection
Agranulocytosis
Benign ethnic neutropenia
Aplastic anemia
Cyclic neutropenia
Uncommon causes
Hereditary folate malabsorption
Pharmacological causes
Abemaciclib
Acetaminophen / caffeine / dihydrocodeine
Acetazolamide
Acitretin
Acyclovir
Aflibercept
Altretamine
Amantadine
Amantadine ER
Amlodipine besylate
Amlodipine / atorvastatin
Amlodipine / benazepril
Amoxapine
Amoxicillin / clavulanate
Amoxicillin / clavulanate XR
Amphotericin B lipid complex
Amphotericin B liposomal
Ampicillin
Anakinra
Anastrozole
Anidulafungin
Antithymocyte globulin
Aprepitant
Aripiprazole
Aripiprazole ER
Aripiprazole lauroxil ER
Artemether / lumefantrine
Asenapine ER
Atenolol / chlorthalidone
Atorvastatin calcium
Axitinib
Azacitidine
Azathioprine
Azithromycin monohydrate
Basiliximab
Belatacept
Belimumab
Belinostat
Bempedoic acid
Bempedoic acid / ezetimibe
Bendamustine hydrochloride
Benznidazole
Bevacizumab
Bexarotene
Bicalutamide
Blinatumomab
Bortezomib
Bosentan
Bosutinib monohydrate
Brexpiprazole
Brivaracetam
Bumetanide
Buspirone hydrochloride
Cabazitaxel
Candesartan cilexetil
Capreomycin sulfate
Carbamazepine
Carbamazepine ER
Carbidopa
Carboplatin
Carfilzomib
Cariprazine
Carisoprodol
Carmustine
Carvedilol
Carvedilol ER
Cefaclor
Cefazolin sodium
Cefdinir
Cefepime hydrochloride
Cefepime / enmetazobactam
Cefixime
Cefotaxime
Cefotetan disodium
Cefoxitin sodium
Cefprozil
Ceftaroline fosamil
Ceftazidime
Ceftazidime / avibactam
Ceftolozane / tazobactam
Ceftriaxone sodium
Cefuroxime axetil
Cefuroxime sodium
Cemiplimab
Cephalexin
Certolizumab pegol pegol
Cetuximab
Chenodeoxycholic acid
Chlorambucil
Chlorpromazine hydrochloride
Chlorthalidone
Cidofovir dihydrate
Cilostazol
Cimetidine
Ciprofloxacin hydrochloride
Ciprofloxacin hydrochloride ER
Cisplatin
Citalopram hydrobromide
Clarithromycin
Clarithromycin ER
Clemastine
Clindamycin
Clindamycin hydrochloride
Clobazam
Clofarabine
Clomipramine hydrochloride
Clonazepam
Clopidogrel bisulfate
Clozapine
Cobimetinib
Colchicine
Cortisone acetate
Cosibelimab
Cyclophosphamide
Cyclosporine
Cyproheptadine hydrochloride
Cysteamine bitartrate DR
Cytarabine
Cytomegalovirus immune globulin
Dacarbazine
Dactinomycin
Danazol
Dantrolene sodium
Dapsone
Daratumumab / hyaluronidase
Datopotamab deruxtecan
Daunorubicin hydrochloride
Deferoxamine
Dexmethylphenidate hydrochloride
Dexmethylphenidate hydrochloride ER
Dexrazoxane
Dextroamphetamine sulfate
Dextromethorphan / bupropion ER
Diclofenac potassium
Diclofenac sodium
Diclofenac sodium DR
Diclofenac sodium ER
Didanosine DR
Diethylpropion hydrochloride
Diltiazem hydrochloride
Diltiazem hydrochloride ER
Dimethyl fumarate DR
Disopyramide
Divalproex sodium DR
Divalproex sodium ER
Docetaxel
Doxazosin mesylate
Doxazosin mesylate ER
Doxepin hydrochloride
Doxorubicin hydrochloride
Eculizumab
Ensartinib
Enzalutamide
Epirubicin hydrochloride
Epoetin alfa
Eprosartan
Erythromycin
Erythromycin DR
Erythromycin lactobionate
Erythromycin stearate
Eslicarbazepine acetate
Esomeprazole magnesium DR
Esomeprazole sodium
Estramustine
Etanercept
Ethambutol hydrochloride
Ethosuximide
Etidronate disodium
Etodolac
Etoposide
Etravirine
Everolimus
Fam-trastuzumab deruxtecan
Famciclovir
Febuxostat
Fenofibrate
Fentanyl
Fentanyl ER
Ferric carboxymaltose
Finasteride
Fingolimod
Floxuridine
Fluconazole
Flucytosine
Fluorouracil
Fluphenazine hydrochloride
Flurbiprofen
Flutamide
Fluticasone propionate
Fluvastatin sodium
Fluvastatin sodium ER
Fluvoxamine maleate CR
Foscarnet sodium
Fosphenytoin sodium
Fulvestrant
Furosemide
Gabapentin
Ganciclovir
Gemfibrozil
Gentamicin sulfate
Glasdegib
Glatiramer acetate
Glimepiride
Glipizide
Glipizide XL
Glyburide
Glyburide / metformin
Glyburide micronized
Golimumab
Granisetron hydrochloride
Griseofulvin microsized
Griseofulvin ultramicrosized
Haloperidol
Haloperidol decanoate LA
Hydralazine hydrochloride
Hydrochlorothiazide
Hydroxychloroquine sulfate
Hydroxyurea
Ibritumomab tiuxetan
Idarubicin hydrochloride
Idelalisib
Ifosfamide
Imatinib mesylate
Imipenem
Imipenem / cilastatin
Imipramine pamoate
Imiquimod
Indapamide
Indomethacin
Indomethacin ER
Infliximab
Inotuzumab ozogamicin
Interferon alfa-n3
Interferon beta
Interferon gamma-1b
Ipilimumab
Irinotecan hydrochloride
Isotretinoin
Isradipine
Itraconazole
Ivermectin
Ixabepilone
Ketorolac tromethamine
Lamivudine
Lamotrigine
Lansoprazole DR
Larotrectinib
Lazertinib
Leflunomide
Lenalidomide
Lenvatinib
Leuprolide acetate
Levetiracetam
Levetiracetam ER
Levofloxacin
Lincomycin hydrochloride
Lindane
Linezolid
Lisinopril sodium
Lisinopril / hydrochlorothiazide
Lomustine
Lorazepam
Lorazepam ER
Lorcaserin hydrochloride
Losartan / hydrochlorothiazide
Lovastatin
Lovastatin ER
Lovotibeglogene autotemcel
Loxapine
Meclofenamate
Mefenamic acid
Megestrol acetate
Meloxicam
Melphalan
Memantine hydrochloride
Memantine hydrochloride ER
Meropenem
Mesalamine
Mesalamine DR
Mesalamine ER
Mesna
Metaxalone
Methimazole
Methocarbamol
Methotrexate
Methsuximide
Methyldopa
Methylphenidate hydrochloride
Methylphenidate hydrochloride ER
Metoclopramide hydrochloride
Metolazone
Metronidazole
Metronidazole ER
Metyrapone
Mexiletine hydrochloride
Minocycline hydrochloride
Minoxidil
Mirdametinib
Mirtazapine
Mitomycin
Mitotane
Mitoxantrone
Molindone hydrochloride
Moxifloxacin hydrochloride
Mycophenolate mofetil mofetil
Nadolol / bendroflumethiazide
Naproxen
Naproxen DR
Naproxen sodium ER
Nelarabine
Nelfinavir
Nifedipine
Nifedipine ER
Nifurtimox
Nilotinib
Niraparib
Nisoldipine ER
Nitisinone
Nitrofurantoin
Obecabtagene autoleucel
Obinutuzumab
Ofatumumab
Ofloxacin
Olanzapine
Olanzapine / fluoxetine
Olanzapine pamoate ER
Olaparib
Olmesartan / hydrochlorothiazide
Olsalazine
Omeprazole magnesium DR
Osimertinib
Oxaliplatin
Oxaprozin
Oxazepam
Oxcarbazepine
Oxcarbazepine XR
Oxycodone hydrochloride
Oxycodone hydrochloride ER
Paclitaxel
Palbociclib
Paliperidone ER
Pamidronate
Panobinostat
Pantoprazole sodium
Pantoprazole sodium DR
Paroxetine hydrochloride
Peginterferon beta-1a
Pembrolizumab
Penicillamine
Penicillin V potassium
Pentamidine isethionate
Pentostatin
Pentoxifylline ER
Perindopril erbumine
Pertuzumab
Phenelzine sulfate
Phenytoin sodium
Phenytoin sodium ER
Pioglitazone / glimepiride
Piperacillin / tazobactam
Piroxicam
Polatuzumab vedotin
Pomalidomide
Pralatrexate
Prasugrel hydrochloride
Pregabalin
Pregabalin ER
Primaquine phosphate
Probenecid
Probenecid / colchicine
Procarbazine hydrochloride
Prochlorperazine
Prochlorperazine edisylate
Prochlorperazine maleate
Promethazine hydrochloride
Propafenone hydrochloride
Propafenone hydrochloride ER
Propylthiouracil
Protamine
Pyrimethamine
Quetiapine fumarate
Quetiapine fumarate ER
Quinapril hydrochloride
Quinine sulfate
Rabeprazole sodium DR
Ramipril
Ranitidine hydrochloride
Ranolazine ER
Remdesivir
Repaglinide
Ribavirin
Ribociclib
Rifabutin
Rifampin
Risperidone
Risperidone ER
Rituximab
Romidepsin
Rufinamide
Saquinavir
Sarilumab
Selinexor
Serdexmethylphenidate / dexmethylphenidate
Sertraline hydrochloride
Sildenafil citrate
Silver sulfadiazine
Simvastatin
Sirolimus
Sodium phenylbutyrate
Sorafenib
Sotalol hydrochloride
Spironolactone
Stavudine
Streptomycin
Streptozocin
Sulfasalazine
Sulfasalazine DR
Sulopenem / probenecid
Sunitinib malate
Tacrolimus
Tacrolimus ER
Tamoxifen citrate
Tedizolid phosphate
Telisotuzumab vedotin
Temsirolimus
Teriflunomide
Thalidomide
Thioguanine
Thiotepa
Ticlopidine
Tinidazole
Tobramycin
Tolazamide
Tolbutamide
Topiramate
Topiramate XR
Toremifene citrate
Torsemide
Trandolapril
Tranylcypromine sulfate
Trastuzumab
Triamterene / hydrochlorothiazide
Trimethoprim
Trimethoprim / sulfamethoxazole
Upadacitinib ER
Ursodeoxycholic acid
Valacyclovir hydrochloride
Valgancyclovir hydrochloride
Valproate sodium
Valproic acid
Valrubicin
Valsartan
Venetoclax
Venlafaxine hydrochloride
Verteporfin
Vimseltinib
Vinblastine sulfate
Vincristine sulfate
Vinorelbine
Vorasidenib
Zenocutuzumab
Zidovudine
Zileuton
Ziprasidone hydrochloride
Ziprasidone mesylate
Zolbetuximab
Zolpidem tartrate
Zolpidem tartrate CR
Zonisamide
ziv-Aflibercept