Differential Diagnosis
DDx Strength: Weak
Histamine H1 antagonist, Multiple skin lesions Add or remove findings

Exanthematous drug eruption

2/2
Exanthematous drug eruptionExanthematous drug eruption

Urticaria

2/2
UrticariaUrticaria

Allergic contact dermatitis

2/2
Allergic contact dermatitisAllergic contact dermatitis

Anaphylaxis

2/2
Anaphylaxis

Livedo reticularis

2/2
Livedo reticularisLivedo reticularis

Psoriasis

2/2
PsoriasisPsoriasis

Fixed drug eruption

2/2
Fixed drug eruptionFixed drug eruption

Pruritus without rash

2/2
Pruritus without rashPruritus without rash

Drug-induced hepatotoxicity

2/2
Drug-induced hepatotoxicity

Drug-induced photosensitive reaction

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

Angioedema

2/2
AngioedemaAngioedema

Erythema multiforme

2/2
Erythema multiformeErythema multiforme

Skin popping substance abuse

2/2
Skin popping substance abuseSkin popping substance abuse

Leukocytoclastic vasculitis

2/2
Leukocytoclastic vasculitisLeukocytoclastic vasculitis

Acute generalized exanthematous pustulosis

2/2
Acute generalized exanthematous pustulosisAcute generalized exanthematous pustulosis

Drug-induced photoallergic reaction

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

Pseudolymphoma

2/2
PseudolymphomaPseudolymphoma

Systemic contact dermatitis

2/2
Systemic contact dermatitisSystemic contact dermatitis

Baboon syndrome

2/2
Baboon syndromeBaboon syndrome

Symmetric drug-related intertriginous and flexural exanthema

2/2
Symmetric drug-related intertriginous and flexural exanthema

Bullous drug eruption

2/2
Bullous drug eruptionBullous drug eruption

Erosive balanitis

2/2
Erosive balanitisErosive balanitis

Interstitial granulomatous drug reaction

2/2
Interstitial granulomatous drug reactionInterstitial granulomatous drug reaction

Pustular psoriasis

2/2
Pustular psoriasisPustular psoriasis

Toxic epidermal necrolysis

2/2
Toxic epidermal necrolysisToxic epidermal necrolysis

Aplastic anemia

2/2
Aplastic anemiaAplastic anemia

Drug-induced nausea or vomiting

1/2
Drug-induced nausea or vomiting

Drug-induced diarrhea

1/2
Drug-induced diarrhea

Drug-induced cough

1/2
Drug-induced cough

Insomnia

1/2
Insomnia

Drug-induced ataxia

1/2
Drug-induced ataxia

Drug-induced dyspepsia

1/2
Drug-induced dyspepsia

Keratoconjunctivitis sicca syndrome

1/2
Keratoconjunctivitis sicca syndrome

Drug-induced abdominal pain

1/2
Drug-induced abdominal pain

Orthostatic hypotension

1/2
Orthostatic hypotension

Asthma

1/2
Asthma

Depressive disorders

1/2
Depressive disorders

Drug-induced syncope

1/2
Drug-induced syncope

Gynecomastia

1/2
GynecomastiaGynecomastia

Migraine headache

1/2
Migraine headache

Parkinsonism

1/2
Parkinsonism

Ventricular tachycardia

1/2
Ventricular tachycardia

Drug-induced somnolence

1/2
Drug-induced somnolence

Drug-induced headache

1/2
Drug-induced headache

Drug-induced fatigue

1/2
Drug-induced fatigue

Drug-induced epistaxis

1/2
Drug-induced epistaxis

Drug-induced dysgeusia

1/2
Drug-induced dysgeusia

Prolonged QT interval

1/2
Prolonged QT interval

Drug-induced constipation

1/2
Drug-induced constipation

Drug-induced palpitations

1/2
Drug-induced palpitations

Seizure

1/2
Seizure

Drug-induced hypotension

1/2
Drug-induced hypotension

Brugada syndrome

1/2
Brugada syndrome

Ocular drug reaction

1/2
Ocular drug reaction

Anticholinergic syndrome

1/2
Anticholinergic syndrome

Drug-induced anorexia

1/2
Drug-induced anorexia

Delirium

1/2
Delirium

Drug-induced leukopenia

1/2
Drug-induced leukopenia

Drug-induced rhinitis

1/2
Drug-induced rhinitis

Labyrinthitis

1/2
Labyrinthitis

Acute interstitial nephritis

1/2
Acute interstitial nephritis

Acute kidney injury

1/2
Acute kidney injury

Bruxism

1/2
Bruxism

Drug-induced alopecia

1/2
Drug-induced alopeciaDrug-induced alopecia

Drug-induced diaphoresis

1/2
Drug-induced diaphoresis

Drug-induced dizziness

1/2
Drug-induced dizziness

Drug-induced dyspnea

1/2
Drug-induced dyspnea

Drug-induced erectile dysfunction

1/2
Drug-induced erectile dysfunction

Drug-induced hypertension

1/2
Drug-induced hypertension

Follicular conjunctivitis

1/2
Follicular conjunctivitisFollicular conjunctivitis

Heat stroke

1/2
Heat stroke

Serotonin syndrome

1/2
Serotonin syndrome

Drug-induced anxiety

1/2
Drug-induced anxiety

Drug-induced dystonia

1/2
Drug-induced dystonia

Drug-induced weakness

1/2
Drug-induced weakness

Drug-induced fever

1/2
Drug-induced fever

Drug-induced hepatitis

1/2
Drug-induced hepatitis

Drug-induced menstrual changes

1/2
Drug-induced menstrual changes

Torsades de pointes

1/2
Torsades de pointes

Drug-induced chest pain

1/2
Drug-induced chest pain

Drug-induced movement disorders

1/2
Drug-induced movement disorders

Drug-induced paresthesia

1/2
Drug-induced paresthesia

Drug-induced psychosis

1/2
Drug-induced psychosis

Hemolytic anemia

1/2
Hemolytic anemia

Aseptic meningitis

1/2
Aseptic meningitis

Cervical dystonia

1/2
Cervical dystonia

Drug-induced ototoxicity

1/2
Drug-induced ototoxicity

Hyponatremia

1/2
Hyponatremia

Rhabdomyolysis

1/2
Rhabdomyolysis

Suppurative parotitis

1/2
Suppurative parotitis

Acute otitis media

1/2
Acute otitis media

Drug-induced jaundice

1/2
Drug-induced jaundiceDrug-induced jaundice

Tardive dyskinesia

1/2
Tardive dyskinesia

Talc-associated lung disease

1/2
Talc-associated lung disease