Author: Andrew Parker, MD
Andrew Parker, MD
Dr. Andrew Parker is a board-certified internal medicine physician with over 10 years of clinical experience. He earned his medical degree from the University of California, San Francisco (UCSF), and has worked at leading hospitals including St. Mary’s Medical Center. Dr. Parker specializes in patient education and digital health communication. He now focuses on creating clear, accessible, and evidence-based medical content for the public.
Comprehensive Guide to Methylphenidate: Uses, Dosage, Side Effects, and More What is Methylphenidate? Methylphenidate is a central nervous system stimulant that increases dopamine and norepinephrine levels in the brain, enhancing attention and reducing hyperactivity. This medication is primarily used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy, providing therapeutic benefits for focus and wakefulness. Overview of Methylphenidate Generic Name: Methylphenidate Brand Name: Ritalin, Concerta, generics Drug Group: Central nervous system stimulant Commonly Used For This medication is used to: Treat ADHD symptoms. Manage narcolepsy. Improve cognitive function in specific cases. Key Characteristics Form: Immediate-release tablets (5 mg, 10 mg,…
Comprehensive Guide to Amphetamine: Uses, Dosage, Side Effects, and More What is Amphetamine? Amphetamine is a central nervous system (CNS) stimulant that increases dopamine and norepinephrine levels in the brain, used primarily to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. This medication is a controlled substance with high abuse potential, requiring strict medical supervision. Overview of Amphetamine Generic Name: Amphetamine Brand Name: Adderall (mixed salts), Evekeo, generics Drug Group: CNS stimulant (Schedule II controlled substance) Commonly Used For This medication is used to: Treat ADHD. Manage narcolepsy. Improve focus and wakefulness. Key Characteristics Form: Oral tablets (5 mg, 10…
Comprehensive Guide to Lurasidone: Uses, Dosage, Side Effects, and More What is Lurasidone? Lurasidone is an atypical antipsychotic that modulates dopamine D2 and serotonin 5-HT2A receptors, primarily used to treat schizophrenia and bipolar depression. This medication offers a favorable metabolic profile compared to older antipsychotics, making it a preferred choice in long-term psychiatric care. Overview of Lurasidone Generic Name: Lurasidone Brand Name: Latuda, generics Drug Group: Atypical antipsychotic Commonly Used For This medication is used to: Treat schizophrenia. Manage bipolar I depression. Control psychotic symptoms. Key Characteristics Form: Oral tablets (20 mg, 40 mg, 60 mg, 80 mg, 120 mg)…
What Is Eye Itching? Causes, Treatments, and Prevention Tips Itchy eyes are one of the most common eye complaints. They’re often caused by allergies or a condition known as dry eye syndrome. However, allergies aren’t the only culprit — infections, blepharitis (eyelid inflammation), foreign bodies in the eye, contact lens irritation, and even corneal ulcers can also lead to eye itching. In most cases, doctors can diagnose itchy eyes simply through medical history and a basic eye examination. In certain situations, your ophthalmologist may collect a sample of eye discharge to check for bacterial or viral infection. Mild cases of…
Red Eye: Causes, Symptoms, and Effective Treatments Red eye, also known as conjunctival hyperemia, is one of the most common eye conditions that can affect one or both eyes. The redness usually occurs when the tiny blood vessels on the surface of the eye become dilated or inflamed due to irritation, infection, or other underlying causes. Understanding Red Eye What Is Red Eye? Red eye refers to the visible dilation of blood vessels on the surface of the eyeball. This condition may result from infections, allergies, inflammation, or increased intraocular pressure. The redness typically involves the conjunctiva — the thin,…
Nearsightedness (Myopia): Symptoms, Causes, Prevention, and Treatment Myopia, commonly known as nearsightedness, is a refractive error of the eye in which light focuses in front of the retina instead of directly on it. As a result, people with myopia can see nearby objects clearly, but distant objects appear blurry. This is the most common refractive error worldwide, especially among school-aged children and young adults. The prevalence of myopia has risen sharply in recent decades due to lifestyle and environmental factors such as prolonged screen use and limited outdoor activity. Understanding Myopia Myopia (also called Nearsightedness) occurs when the eyeball grows…
Discoid Lupus Erythematosus (DLE): Symptoms, Causes, and Prevention Discoid lupus erythematosus (DLE) is the most common form of chronic cutaneous lupus, primarily affecting the skin on the face, ears, scalp, and upper neck. The condition tends to flare up or worsen after sun exposure. Although DLE is a long-term autoimmune skin disorder that cannot be completely cured, timely management can help reduce flare-ups, minimize scarring, and prevent progression to systemic lupus erythematosus (SLE) — a more serious condition affecting internal organs. Understanding Discoid Lupus Erythematosus Lupus erythematosus is a chronic autoimmune disease that can damage different parts of the body,…
Comprehensive Guide to Ziprasidone: Uses, Dosage, Side Effects, and More What is Ziprasidone? Ziprasidone is an atypical antipsychotic that modulates dopamine and serotonin receptors, primarily used to treat schizophrenia and bipolar I disorder. This medication helps stabilize mood and reduce psychotic symptoms by balancing neurotransmitter activity in the brain, offering a favorable metabolic profile compared to older antipsychotics. Overview of Ziprasidone Generic Name: Ziprasidone Brand Name: Geodon, Zeldox (Europe), generics Drug Group: Atypical antipsychotic (second-generation) Commonly Used For This medication is used to: Treat schizophrenia. Manage acute mania in bipolar I disorder. Control agitation in psychiatric emergencies. Key Characteristics Form:…
Comprehensive Guide to Lorazepam: Uses, Dosage, Side Effects, and More What is Lorazepam? Lorazepam is a high-potency benzodiazepine that enhances GABA activity in the central nervous system, producing anxiolytic, sedative, anticonvulsant, and muscle relaxant effects. This medication is widely used in acute and short-term management of anxiety, insomnia, and seizures, but carries a high risk of tolerance and dependence with prolonged use. Overview of Lorazepam Generic Name: Lorazepam Brand Name: Ativan, generics Drug Group: Benzodiazepine (anxiolytic, sedative-hypnotic) Commonly Used For This medication is used to: Treat acute anxiety disorders. Manage insomnia associated with anxiety. Control status epilepticus. Key Characteristics Form:…
Comprehensive Guide to Imipramine: Uses, Dosage, Side Effects, and More What is Imipramine? Imipramine is a tricyclic antidepressant (TCA) that inhibits the reuptake of norepinephrine and serotonin in the brain, increasing their availability to improve mood and reduce depressive symptoms. This medication is one of the earliest TCAs, widely used for depression, enuresis, and chronic pain syndromes, under close medical supervision due to its side effect profile. Overview of Imipramine Generic Name: Imipramine Brand Name: Tofranil, generics Drug Group: Tricyclic antidepressant (TCA) Commonly Used For This medication is used to: Treat major depressive disorder (MDD). Manage nocturnal enuresis in children.…