Of all the following malignant skin cancers, which one is the most common?

Choice A reason: Drinking large amounts of alcohol can relieve symptoms of essential tremor is false because essential tremor is a different neurological disorder from PD, and alcohol can worsen PD symptoms or interact with medications.

Choice B reason: Motor tremors and slow movement accompany severe cognitive impairment is false because not all people with PD develop cognitive impairment, and the severity of motor and cognitive symptoms may not correlate.

Choice C reason: It is advised to take levodopa-carbidopa on an empty stomach is true because food, especially protein, can interfere with the absorption of levodopa-carbidopa, which is the main medication for PD.

Choice D reason: Lewy body dementia (LBD) is the most common form of dementia is false because Alzheimer's disease is the most common form of dementia, and LBD is a related but distinct condition that can affect some people with PD.

Choice A reason: Scabies is a skin infestation caused by tiny mites that burrow into the skin and lay eggs. It causes intense itching and a pimple-like rash, usually in the folds of the skin, such as the armpits, groin, or between the fingers. Scabies is highly contagious and can spread through direct skin contact or shared clothing or bedding.

Choice B reason: Herpes zoster, also known as shingles, is a viral infection that affects the nerves and the skin. It causes a painful, blistering rash that usually appears on one side of the body or face. Herpes zoster is caused by the same virus that causes chickenpox, which can reactivate later in life, especially in older adults or people with weakened immune systems.

Choice C reason: Skin cancer is an abnormal growth of skin cells that can be caused by exposure to ultraviolet (UV) radiation from the sun or tanning beds. It can appear as a new or changing mole, a sore that does not heal, or a scaly or crusty patch of skin. Skin cancer can vary in appearance, size, shape, and color, depending on the type and stage of the cancer.

Choice D reason: Actinic keratosis is a precancerous skin condition that is caused by chronic sun damage. It appears as rough, scaly, or crusty spots on the skin, usually on the face, ears, scalp, or hands. Actinic keratosis can sometimes develop into squamous cell carcinoma, a type of skin cancer, if left untreated.