Differential Diagnosis
DDx Strength: Weak
Histamine H2 antagonist, Multiple skin lesions Add or remove findings

Anaphylaxis

2/2
Anaphylaxis

Psoriasis

2/2
PsoriasisPsoriasis

Urticaria

2/2
UrticariaUrticaria

Exanthematous drug eruption

2/2
Exanthematous drug eruptionExanthematous drug eruption

Allergic contact dermatitis

2/2
Allergic contact dermatitisAllergic contact dermatitis

Candidiasis

2/2
CandidiasisCandidiasis

Dermographism

2/2
DermographismDermographism

Seborrheic dermatitis

2/2
Seborrheic dermatitisSeborrheic dermatitis

Xerosis

2/2
XerosisXerosis

Drug-induced hepatotoxicity

2/2
Drug-induced hepatotoxicity

Subacute cutaneous lupus erythematosus

2/2
Subacute cutaneous lupus erythematosusSubacute cutaneous lupus erythematosus

Angioedema

2/2
AngioedemaAngioedema

Erythema multiforme

2/2
Erythema multiformeErythema multiforme

Erythroderma

2/2
ErythrodermaErythroderma

Leukocytoclastic vasculitis

2/2
Leukocytoclastic vasculitisLeukocytoclastic vasculitis

Urticarial vasculitis

2/2
Urticarial vasculitisUrticarial vasculitis

Vasculitis

2/2
VasculitisVasculitis

Drug-induced photosensitive reaction

2/2
Drug-induced photosensitive reactionDrug-induced photosensitive reaction

Acquired ichthyosis

2/2
Acquired ichthyosisAcquired ichthyosis

Fixed drug eruption

2/2
Fixed drug eruptionFixed drug eruption

Lichenoid drug eruption

2/2
Lichenoid drug eruptionLichenoid drug eruption

Pruritus without rash

2/2
Pruritus without rashPruritus without rash

Acute generalized exanthematous pustulosis

2/2
Acute generalized exanthematous pustulosisAcute generalized exanthematous pustulosis

Erythema annulare centrifugum

2/2
Erythema annulare centrifugumErythema annulare centrifugum

Pseudolymphoma

2/2
PseudolymphomaPseudolymphoma

Symmetric drug-related intertriginous and flexural exanthema

2/2
Symmetric drug-related intertriginous and flexural exanthema

Systemic contact dermatitis

2/2
Systemic contact dermatitisSystemic contact dermatitis

Drug-induced hypersensitivity syndrome

2/2
Drug-induced hypersensitivity syndromeDrug-induced hypersensitivity syndrome

Baboon syndrome

2/2
Baboon syndromeBaboon syndrome

Drug-induced photoallergic reaction

2/2
Drug-induced photoallergic reactionDrug-induced photoallergic reaction

Stevens-Johnson syndrome

2/2
Stevens-Johnson syndromeStevens-Johnson syndrome

Toxic epidermal necrolysis

2/2
Toxic epidermal necrolysisToxic epidermal necrolysis

Aplastic anemia

2/2
Aplastic anemiaAplastic anemia

Henoch-Schönlein purpura

2/2
Henoch-Schönlein purpuraHenoch-Schönlein purpura

Gynecomastia

1/2
GynecomastiaGynecomastia

Drug-induced diarrhea

1/2
Drug-induced diarrhea

Drug-induced nausea or vomiting

1/2
Drug-induced nausea or vomiting

Parkinsonism

1/2
Parkinsonism

Drug-induced cough

1/2
Drug-induced cough

Keratoconjunctivitis sicca syndrome

1/2
Keratoconjunctivitis sicca syndrome

Acute interstitial nephritis

1/2
Acute interstitial nephritis

Drug-induced erectile dysfunction

1/2
Drug-induced erectile dysfunction

Drug-induced leukopenia

1/2
Drug-induced leukopenia

Drug-induced headache

1/2
Drug-induced headache

Acute pancreatitis

1/2
Acute pancreatitisAcute pancreatitis

Drug-induced somnolence

1/2
Drug-induced somnolence

Substance-induced sexual dysfunction

1/2
Substance-induced sexual dysfunction

Delirium

1/2
Delirium

Drug-induced alopecia

1/2
Drug-induced alopeciaDrug-induced alopecia

Drug-induced myopathies

1/2
Drug-induced myopathies

Drug-induced constipation

1/2
Drug-induced constipation

Drug-induced fatigue

1/2
Drug-induced fatigue

Prolonged QT interval

1/2
Prolonged QT interval

Vitamin B12 deficiency

1/2
Vitamin B12 deficiencyVitamin B12 deficiency

Complete atrioventricular block

1/2
Complete atrioventricular block

Drug-induced akathisia

1/2
Drug-induced akathisia

Drug-induced anorexia

1/2
Drug-induced anorexia

Drug-induced arthralgia

1/2
Drug-induced arthralgia

Drug-induced diaphoresis

1/2
Drug-induced diaphoresis

First-degree atrioventricular block

1/2
First-degree atrioventricular block

Hairy tongue

1/2
Hairy tongueHairy tongue

Hypocalcemia

1/2
Hypocalcemia

Hypoglycemia

1/2
Hypoglycemia

Sick sinus syndrome

1/2
Sick sinus syndrome

Sinus bradycardia

1/2
Sinus bradycardia

Drug-induced hepatitis

1/2
Drug-induced hepatitis

Galactorrhea

1/2
GalactorrheaGalactorrhea

Drug-induced chest pain

1/2
Drug-induced chest pain

Hemolytic anemia

1/2
Hemolytic anemia

Drug-induced dystonia

1/2
Drug-induced dystonia

Drug-induced psychosis

1/2
Drug-induced psychosis

Drug-induced weakness

1/2
Drug-induced weakness

Acute eosinophilic pneumonia

1/2
Acute eosinophilic pneumoniaAcute eosinophilic pneumonia

Acute intermittent porphyria

1/2
Acute intermittent porphyria

Acute liver failure

1/2
Acute liver failure

Drug-induced fever

1/2
Drug-induced fever

Drug-induced hyperlipasemia

1/2
Drug-induced hyperlipasemia

Drug-induced leukocytosis

1/2
Drug-induced leukocytosis

Drug-induced movement disorders

1/2
Drug-induced movement disorders

Drug-induced paresthesia

1/2
Drug-induced paresthesia

Hyperprolactinemia

1/2
Hyperprolactinemia

Torsades de pointes

1/2
Torsades de pointes

Drug-induced anemia

1/2
Drug-induced anemia

Gastric hypochlorhydria

1/2
Gastric hypochlorhydria

Drug-induced jaundice

1/2
Drug-induced jaundiceDrug-induced jaundice

Drug-induced hyperamylasemia

1/2
Drug-induced hyperamylasemia

Idiopathic intracranial hypertension

1/2
Idiopathic intracranial hypertensionIdiopathic intracranial hypertension