MCV blood test is part of RBC indices (red blood cell indices) and checks the mean corpuscular volume of your blood cells to help doctors check the health of your blood. The MCV blood test shows the average size of your red blood cells. Red blood cells (RBCs) play an important function in transporting oxygen and nutrients to tissue. Red blood cells that are too large or too small can be an indicator of an underlying medical condition. That is why doctors will check the average size of your red blood cells.

Implantation cramping happens when a fertilized egg attaches itself to the wall of the uterus. Cramps that happen around the time of implantation are one of the first signs of pregnancy along with light spotting (also called implantation bleeding or implantation spotting). Because implantation cramping can happen just before your period, many women mistake the pelvic pain for the start of their period.

Having an itchy belly button can be an embarrassing problem that can cause discomfort in your daily activities. Belly buttons often start to itch because they can become easily infected. An infection in or around your navel can cause patches of red itchy skin that may ooze discharge and crust over as it heals.

Small deposits of calcium salts can happen anywhere on the body, but calcium deposits on the face can be especially distressing. Facial calcium deposits can look like small white bumps on the cheeks, forehead, around the eyes, and near the ears. These groups of whitish pimple-like nodules, known as calcinosis cutis, occur just under the skin and can be caused by acne on the face, trauma to the facial skin, an overactive thyroid gland, or other underlying medical conditions.

Crystals in urine are usually detected in a urine analysis. The only visible sign you may notice if you have urinary crystals is cloudy urine; however, some types of crystals in urine are not visible at all without a microscope. Your kidneys are needed to filter out waste products from the body and excess fluid, and these end up in urine. The kidneys are also responsible for regulating salt, urinary acid content, and other minerals in the urine. If you have kidney problems or your urine is too concentrated, urinalysis may show up that there are too many crystal substances in your pee.

It can be difficult to identify bed bug bites because the red itchy bumps caused by bed bug bites look like flea bites or mosquito bites. Bed bugs usually come out at night and feed on the blood of humans. The tiny nasty pests can leave a cluster of bite marks on your face, arms, stomach, and legs. Some people only have a mild reaction to the bed bug bites and may only have a few small red dots. However, others have more severe reactions and are plagued by large red bite marks and an irresistible urge to scratch them.

Skin peeling between toes is a condition affecting many people and is often caused by a fungal infection or dry skin. Because your toes and feet spend most of the day in footwear, the dark moist conditions can cause skin between your toes to peel and flake off. Germs can quickly multiply and cause infections making the skin between your toes itchy, red, cracked, and prone to peeling. You may find that the peeling skin starts between your two smallest toes and then spreads to areas in between your other toes.

Left eye twitching caused by a muscle spasm can be a disturbing condition that makes you self-conscious. Having a chronic eyelid tic or twitch in your left eye has many causes. Thankfully, it’s very rare that twitching in your left eye or right eye means that you have a serious medical condition. A lack of sleep, stress, eye strain, too much caffeine, or dry eyes are just some of the simple conditions that can cause left eye muscle spasms.

Pulled muscles in the chest can cause mild to excruciating pain in your upper body. You have two large muscles on either side of your chest – the pectoralis major and pectoralis minor, which are sometimes referred to as your “pecs.” A pulled chest muscle can cause a sharp severe pain that radiates to your shoulder or arm. Because of this, the symptoms of pulled, strained, or torn muscles in the chest can be similar to a heart attack. Of course, it’s important to have any pains in your chest checked out especially if there is no discernible cause and the chest discomfort is accompanied by other symptoms.