a, an-: Absence of, without, not.

Example: Anhidrosis- The absence of sweating, which can result from damage to sweat glands, certain medications, or neurological disorders, potentially leading to overheating or heatstroke.

bi-: Two or Both

Example: Bilateral- Pertaining to both sides, such as a bilateral rash that is symmetric on both sides of the body, often associated with systemic conditions like lupus.

dia-: through, complete

Example: Diaphoresis- Excessive sweating, which may be a symptom of fever, physical exertion, or underlying conditions like hyperthyroidism or a heart attack.

Epi-: Upon, on, over 

Epidermis- The outermost layer of the skin, which acts as a protective barrier against environmental damage, pathogens, and water loss

Hyper-:Above, excessive

Hyperkeratosis: Thickening of the skin's outer layer due to excessive keratin production, often seen in conditions like psoriasis, calluses, or warts.

Hypo-deficient, below, under, incomplete

Hypodermic- Pertaining to beneath the skin, often used to describe injections administered into the subcutaneous tissue for rapid absorption of medications

intra-: Within, in 

Intradermal- within the layers of the skin, as in intradermal injections used for allergy testing or tuberculosis screening.

Meta-: change, beyond, after

Metaplasia- Transformation of tissue from one type to another, such as the conversion of normal skin cells to a tougher type after chronic irritation or injury.

neo-: New

Neoplasm- A new growth of abnormal tissue, which can be benign ( like a mole) or malignant (melanoma), requiring medical evaluation for treatment.

para- Besides, around, beyond, abnormal 

Paronychia- inflammation around a nail, typically caused by bacterial or fungal infection, leading to redness, swelling, and pain in the affected area.

Per-: Through

Percutaneous- through the risk, often referring to medical procedures such as percutaneous biopsies or drug administration through patches.

Pro- Before

Prodromal- referring to the early symptoms that occur before a disease becomes fully evident, such as tingling before a herpes outbreak or fever before a rash in measles.

Sub- Under, below 

Subcutaneous- located beneath the skin, as in the subcutaneous fat layer that provides insulation and cushioning to the body.

Trans- Through, across, beyond

Transdermal- Referring to medications applied to the skin that are absorbed into the bloodstream, such as transdermal nicotine patches or hormone replacement therapy

Uni- one 

Unilateral- Pertaining to one side, as in a unilateral skin lesion or rash that affects only one side of the body, often seen in conditions like shingles.

Dys- Difficult, painful, abnormal, labored

Dysplasia- abnormal development or growth of tissue, often referring to precancerous changes in the skin or mucous membranes, such as cervical dysplasia