🧴 1️⃣ Drugs Causing Lichenoid Eruption (Like Metoprolol)

• Beta blockers (Metoprolol, Propranolol, Atenolol)

• ACE inhibitors

• Thiazides

• NSAIDs

• Antimalarials (Chloroquine)

• Gold salts

• Penicillamine

• Lithium

🌞 2️⃣ Drug-Induced Lupus

• Hydralazine

• Procainamide

• Isoniazid

• Minocycline

• Methyldopa

• TNF-alpha inhibitors

🧬 3️⃣ Drug-Induced Psoriasis

• Beta blockers

• Lithium

• Antimalarials

• NSAIDs

• Interferon

💓 4️⃣ Drug-Induced Bradycardia

• Beta blockers

• Verapamil

• Diltiazem

• Digoxin

• Amiodarone

❤️ 5️⃣ Drug-Induced Tachycardia

• Nifedipine

• Hydralazine

• Atropine

• Salbutamol

• Thyroxine

🍬 6️⃣ Drug-Induced Diabetes / Hyperglycemia

• Steroids

• Thiazides

• Beta blockers (mask symptoms)

• Atypical antipsychotics (Olanzapine)

• Tacrolimus

🩸 7️⃣ Drug-Induced Hypoglycemia

• Insulin

• Sulfonylureas

• Beta blockers (mask warning signs)

🦴 8️⃣ Drug-Induced Osteoporosis

• Steroids

• Heparin

• Antiepileptics (Phenytoin)

• Aromatase inhibitors

🧠 9️⃣ Drug-Induced Depression

• Beta blockers

• Isotretinoin

• Interferon

• Steroids

👨‍🦲 🔟 Drug-Induced Hair Loss

• Chemotherapy

• Beta blockers

• Retinoids

• Anticoagulants

• Valproate

🫁 1️⃣1️⃣ Drug-Induced Pulmonary Fibrosis

• Amiodarone

• Bleomycin

• Methotrexate

• Nitrofurantoin

🧂 1️⃣2️⃣ Drug-Induced Hyperkalemia

• ACE inhibitors

• ARBs

• Spironolactone

• NSAIDs

🧴 1️⃣3️⃣ Drug-Induced Gingival Hyperplasia

• Phenytoin

• Nifedipine

• Cyclosporine

🧠 1️⃣4️⃣ Drug-Induced Parkinsonism

• Antipsychotics

• Metoclopramide

• Reserpine

🧴 1️⃣5️⃣ Drug-Induced Photosensitivity

• Doxycycline

• Thiazides

• Amiodarone

• Sulfonamides

🩸 1️⃣6️⃣ Drug-Induced Thrombocytopenia

• Heparin (HIT)

• Quinine

• Sulfa drugs

• Linezolid

🧠 1️⃣7️⃣ Drug-Induced SIADH

• Carbamazepine

• SSRIs

• Cyclophosphamide

🧪 1️⃣8️⃣ Drug-Induced Gynecomastia

• Spironolactone

• Cimetidine

• Finasteride

• Ketoconazole

💀 1️⃣9️⃣ Drug-Induced Stevens–Johnson Syndrome

• Sulfonamides

• Carbamazepine

• Phenytoin

• Allopurinol

• Lamotrigine

🧠 2️⃣0️⃣ Drug-Induced QT Prolongation

• Macrolides

• Fluoroquinolones

• Antipsychotics

• Methadone

• Amiodarone

🎯 Clinical Rule to Remember

When a new disease appears, always ask:

1. Any drug started in last 6 months?

2. Any dose change?

3. Is this a known adverse effect?

👉 20–30% dermatology conditions in elderly are drug induced.