1,410 Possible Causes for Lethargy in USA

    • Upper Respiratory Infection

      Sneezing Nasal discharge Runny, red, swollen eyes Coughing Oral and/or nasal ulcers Fever Hoarse voice Drooling Lethargy If your cat has some or many of these symptoms, contact … Keep all of your cats current on vaccinations against respiratory disease If your cat is not recovering or experiences new signs of respiratory disease, lack of appetite, lethargy … […] eyes that may be red and swollen, squinting nasal congestion, producing “snorting” noises and causing some cats to hold their mouths open to breathe fever which results in lethargy[1] [2]

    • Acute Gastroenteritis
    • Influenza

      Mild, low-grade fever (103 F) Runny nose that may change from clear to thick Lethargy or sleepy demeanor Cough, which may be dry or may bring up sputum Loss of appetite Steve … […] classical influenza features) and may exhibit a sudden severe collapse (apparent life-threatening episode). [ 4 ] With all influenzas, neonates and infants may present with lethargy … In pigs swine influenza produces fever, lethargy, sneezing, coughing, difficulty breathing and decreased appetite.[3] [4] [5]

    • Lethargy

      Lethargy Lactic acidosis congenital infantile ... lethargy LADHSC deficiency ... lethargy Lassa fever ... lethargy Lemierre's syndrome ... lethargy Leucinosis ... lethargyLethargy Wild cherry seed poisoning ... lethargy Wild Lima bean poisoning ... lethargy Wilms tumor 2 ... lethargy Wilms tumor 3 ... lethargy Wilms tumor 4 ... lethargy Wilms … ) Lethargy and Mouth symptoms (227 causes) Lethargy and Sensations (217 causes) Lethargy and Pain (215 causes) Lethargy and Skin symptoms (210 causes) Lethargy and Stomach[6]

    • Appendicitis
    • Meningitis
    • Propionic Acidemia

      […] mi·a ( kē-totik hīpĕr-glī-sēmē-ă ) Inherited metabolic disorder resulting from a deficiency of propionyl-CoA carboxylase PCC; clinical features are episodic vomiting and lethargy … […] methylmalonate and with biotin as a cofactor; caused by a mutation in the gene PCCA encoding propionyl-CoA on 13q or PCCB on 3q; the clinical features are episodic vomiting and lethargy … Signs and symptoms appear in infancy and include vomiting, poor feeding, loss of appetite, hypotonia, and lethargy.[7] [8]

    • Overdose
    • Rheumatic Fever

      Common symptoms of strep throat include: small, painless nodules, or bumps, under the skin chest pain rapid fluttering or pounding chest palpitations lethargy or fatigue nosebleeds[9]

    • Psittacosis

      A bird sick with Psittacosis can show one or several of the following symptoms; eye discharge or swelling, laboured breathing, diarrhoea, poor appetite, lethargy, "fluffed … They are usually similar to influenza, with lethargy, as well as fevers (mine up to 40oC, 104oF), chest pains (which I only had when coughing), headaches, dry cough and nausea … Symptoms: In young birds clinical sings can include rough plumage, low body temperature, tremor, lethargy, conjunctivitis, dyspnea, emaciation, sinusitis, yellow to greenish[10] [11]


    Lethargy is a lowered level of consciousness characterized by drowsiness and apathy.

    Further symptoms

    Similar symptoms


    1. Feline Upper Respiratory Infection - Connecticut Humane Society,…
    2. Feline Upper Respiratory Infections | Cats Exclusive,…
    3. Influenza,
    4. Influenza. What is Influenza? Information on the flu,
    5. Dog Flu | Canine Influenza,
    6. Lethargy -,
    7. Propionic acidemia | definition of Propionic acidemia by Medical dictionary,…
    8. 2017 ICD-10-CM Diagnosis Code E71.121 : Propionic acidemia,…
    9. Rheumatic Fever: Causes, Treatment, & Prevention,
    10. Chlamydia Psittaci,
    11. PSITTACOSIS DISEASE - Pet Birds, Pet Parrots, Exotic Birds,