Both of my girls had the same problem, my youngest one had it the worst though. We tried many things throughout our experience so I will tell you what worked for us and hope you have the same success with your little one.
I found that dry skin problems respond well to self-care measures, such as using moisturizers and avoiding long baths. If your baby has very dry and scaly skin, your doctor may recommend you use an over-the-counter (nonprescription) cream that contains lactic acid or lactic acid and urea.
If it's a more serious skin disease, such as ichthyosis or psoriasis, your doctor may prescribe prescription creams and ointments or other treatments in addition to home care.
Sometimes dry skin leads to dermatitis, which causes red, itchy skin. In these cases, treatment may include hydrocortisone-containing lotions. If your son's skin cracks open, your doctor may prescribe wet dressings with mildly astringent properties to contract the skin and reduce secretions and prevent infection.
Remeber to always Moisturize his skin. Moisturizers provide a seal over the skin to keep water from escaping. Thicker moisturizers work best, such as over-the-counter brands Eucerin and Cetaphil. You may also want to make sure that any products you use on him contain moisturizers. If his skin is extremely dry, you may want to apply an oil, such as baby oil, while his skin is still moist. Oil has more staying power than moisturizers do and prevents the evaporation of water from the surface of the skin.
Use warm water and limit bath time. Very warm water and long baths remove oils from the skin. Limit his bath time to about 15 minutes or less, and use warm, to tepid water.
Avoid harsh, drying soaps. it's best to use cleansing creams or gentle skin cleansers and bath gels with added moisturizers. Choose mild soaps that have added oils and fats, such as Neutrogena, Basis or Dove. You might want to experiment with several brands until you find one that works particularly well for him. A good rule of thumb is that his skin should feel soft and smooth after cleansing, never tight or dry.
Pat dry. After washing or bathing, gently pat or blot his skin dry with a towel so that some moisture remains on the skin.
Immediately moisturize his skin with an oil or cream.
Use a humidifier. Hot, dry indoor air can parch sensitive skin and worsen itching and flaking. A portable home humidifier or one attached to your furnace adds moisture to the air inside your home. Portable humidifiers come in many varieties. Choose one that meets your budget and any special needs. And be sure to keep your humidifier clean to ward off bacteria and fungi.
Choose fabrics that are kind to his skin. Natural fibers such as cotton and silk allow the skin to breathe. But wool, although it certainly qualifies as natural, can irritate even normal skin.
When you wash his clothes, try to use detergents without dyes or perfumes, both of which can irritate his skin.
If dry skin causes itching, apply cool compresses to the area.
To reduce inflammation, use a nonprescription hydrocortisone cream or ointment, containing at least 1 percent hydrocortisone. If these measures don't relieve his symptoms or if his symptoms worsen, see his doctor or consult a dermatologist.
I hope this helps you both, I know how bad he feels having to go through something like this, especially since he is unable to communicate his discomfort to you. My heart goes out to you both.
Good luck and please let us know how he is doing.
Bella