Neuraxial analgesia and non sedating antihistamines
Side effects of antihistamines depend in part on the specific type.
Most are available as just an antihistamine or in combination with other drugs such as decongestants.Antihistamines are also available as nasal sprays for the treatment of allergic rhinitis (nasal allergies) and as eye drops for the treatment of allergic conjunctivitis (eye allergies).Antihistamines for Hives (Urticaria)Oral antihistamines are the main treatment for hives.When the body comes into contact with something to which it is allergic, whether through contact, respiration or consumption, substances called histamines are released to attack the allergen.Histamines encourage the body to rid itself of the allergen by triggering ways to flush the allergen, such as watery eyes, a runny nose and sneezing; if the skin is the affected area, the histamines may produce a rash as protection.Antihistamines block histamines, thereby preventing some or all of the allergen's effects, but early antihistamines often caused drowsiness.
A non-sedating antihistamine is one that is less likely to cause patients to feel sleepy or tired.
Placing topical antihistamines on the skin, such as Benadryl cream, can cause contact dermatitis due to the antihistamine.
Other Uses for Antihistamines Antihistamines are frequently used for the treatment of other allergic conditions, although they may not be as effective as they are for hay fever and hives.
When suffering from a cold or flu, some patients find that antihistamines help dry the nasal secretions and relieve the cough.
Occasionally, certain antihistamines are used to treat chronic headaches or asthma.
Although pharmaceutical manufacturers describe some of their products as non-sedating antihistamines, some patients do experience drowsiness, fatigue, impaired motor responses and concentration difficulties when taking them.